Try visiting Pakistan and telling you are an Arab, and see the love and respect you will earn.
They a simple and naive. Ask Pakistanis living in KSA, UAE, Bahrain, Qatar about how Arabs are like, or even some of us American/Canadian Pakistanis who interact with Arab Egyptians, Syrians, Palestinians, Jordanians, etc. on a daily basis.
Arabs generally don't care about Islamic solidarity, unless it involves an interest to them. They are mostly irreligious, skilled at speaking with emotion about Islam, but they don't practice it.
Not saying they are bad people, but Islam is not their priority.
Arab regimes are this way because most Arabs are this way. The most outspoken of them think they are super Muslims, and think they can say anything to anyone at any time when they are in masajid or a Muslim organization and that their words should be taken as hadith.
We are in this present disunited situation as a result of the disease of cowardice and betrayal which has infected the Arab mindset since their revolt against the Ottomans. It is the azab of Allah swt on them, and it won't end until they are wholesale massacred by the Israelis. This is based on sahih hadith where prophet Muhammad saws talked about Dajjal and when asked where are the Arabs to resist, He said that there will only be a few of them left.
Make no mistake, genocide is coming to the Arabs and their games will be over very soon. It is time that the rest of us Muslims pick up the true mantle of Islam and unite/brace for this.