Yeah, we liked complaining about the bed, it's kinda extreme, everything has to be symmetrical, not only our own equipment, but everyone in the room should do it in the same order. Combat boots, flippers and running shoes should be on the same line, in the same line with other people's shoes, backpack zippers should always be closed, nice and tidy, vests and uniforms should always be ready with full bottles of water, protective glasses and six full magazines, guard duties in night time were all under our responsibility and there must always be night guards, commanders would try to sneak into our tents/rooms and try to steal our guns and we had to catch them or sometimes did foolish stuff, one commander woke me up, quietly gave me a piece of watermelon and tell me no one would ever believe me if I told that and walk away😂
But all of this makes your mind strive for perfection in your actions, which is very valuable.
I was in a combat engineering unit for a while but I got injured (fucked up ankle) and had to quit, we also learned how to use mine detectors and IEDs as well, but this field sucks because there are plastic anti personnel mines that can't be detected by mine detectors. The joke about us was that we give people a high-one because we didn't have five fingers, generally the jokes about us is about lack of legs/arms
Humans have insane abilities that are only acquired by a massive amount of experience. Humans build intuitive capabilities that they often cannot explain, capabilities that cannot be passed to each other. This applies to every field in our life, not just military. You could see this in ace pilots, elite snipers, operators and tank crews that are force multipliers in a war, or even just experienced mechanics, cooks, engineers or hackers.
But yeah, if he thinks experience is just a joke, let him think that way. Good for us.