Bro, you didn't even refute a single one of the points I made on top of which you just posted another video which only addressed the "we can all fit into Texas" argument that was only used to demonstrate that there is A LOT of room on this planet. If the individual in the video I originally posted wanted he could have just said we can give everyone in the world a 2000 sq ft condo in giant buildings and occupy just a half, a quarter or even less space in Texas depending on how large we make them. Imagine Hong Kong but on a much larger scale with a lot more room per apartment.
The guys you are listening to have been making these doom and gloom predictions for 200 years now. The fact is that overpopulation will NEVER be a problem especially considering the fact that the Earths fertility rate has been decreasing since the 60s. It will peak at 9 billion and start to come back down because it is a proven fact that as people become wealthier and standard of living improves they live longer and have fewer kids and if you want visual confirmation of that you can view the link below:
World Development Indicators - Google Public Data Explorer
A fertility rate of 2.1% is needed just to maintain equilibrium (i.e. your current population) and that is assuming there is no war, famine and disease and the world is at 2.45% (so we are just barely replacing our own population right now).
The guys you are listening to don't know what they're talking about.
The guy in the videos first complaint is regarding where we will fit all the roads, warehouses, factories, etc... based on the initial example provided by the guy in my video without realizing that the example was simply for visualization purposes to demonstrate that there is a lot of land.
Lets take the city of Toronto in Canada (I wont use Victoria since there is a lot more open space here than there needs to be). The city housed a population of 2.615 million over a space of 650 sq. km in 2011 (the population has since grown and I am sure there are a lot of empty apartments and houses available to move into as well as vacant lots that can be built on but for arguments sake lets assume everyone is living comfortably - we will give the space occupied by the empty apartments, houses, etc... to those people who may be living in smaller accommodations, have no homes or maybe even the construction of additional manufacturing facilities). If we assume the population of the world is 7 billion than you need 2677 cities the size of Toronto to accommodate them or 1,740,050 sq. km. As of 2000 the worlds total urban areas occupied a space of 3,510,000 sq km which is approximately twice the amount of space needed so in reality we can fit 14 billion people using the same space currently occupied by urban areas (no need for deforestation or building on agricultural land or even arable land).
As for the remainder of the video he basically pointed to a lack of freshwater available for humans and how we are destroying farmland.
If you read my post I already pointed out how there is no food problem because between 30 to 50% (1.2–2 billion tonnes) of the worlds food supply is uneaten and just goes to waste (due to poor handling and transportation practices and waste in the developed world) but that the majority of the countries on Earth (being third world or developing) are severely under producing per acre of land. To feed a family of four (diet of veggies, meat, eggs, milk and wheat) you need about 2 acres of land and currently the word has 15.4 billion acres of agricultural/arable land. Thus, we can actually feed about 61 billion people using what we already have (no need for deforestation). We can also produce even more food if we raise fish and invertebrates on farms in the oceans (which we're already doing and the practice is growing but it's still on a very small scale) and dedicate more land towards the manufacture of veggies/fruits or simply go vegetarian.
There is also an infatuation with the worlds fresh water supply. I am not sure if you heard of desalination plants (turn sea water into fresh water) but they are getting cheaper every year and Israel already uses them to supply about 40% of the their entire countries water needs. The country is now even said to have a water surplus which they previously didn't think could be possible. It is estimated that half the cost of a desalination plant comes from the cost of the energy required to operate it but as I stated in my previous post we are getting better at producing more electricity at cheaper rates (ex. solar is getting cheaper every year with its price now comparable to coal). Furthermore, countries are not learning to harvest and conserve fresh water. For example, Pakistan literally allows about 31.5 million cubic meters of water to drain out into the Arabian sea, there is no cultivation of monsoon rain waters (which instead are wasted by allowing to flood agricultural land) and then we have all the water that is unnecessarily wasted in agriculture (ex. Pakistan as well as other countries can cut the amount of water they use in agriculture by almost half simply by switching over to drip irrigation - agricultural irrigation represent the largest bulk of a countries fresh water usage).
These doom and gloom guys have got it all wrong.