The issue is the OECD is a small group of nations that decided some tax rules in their favour and to their benefit. The west cannot simply decide the tax rules for the world when they are in the minority. A fairer system would be to allow all countries to vote or give input on any global tax changes that negatively or positively impact them. All countries need a voice and for their priorities to be taken into account. The decision making needs to be democratic just like this UN vote. If the tax rules are just then the majority of the world will agree with it. If they don't then it gets ditched....its called democracy something the OECD should support now the body is irrelevant when it comes to global taxation .
But don't believe me believe the world. Just look at the voting results it speaks for itself. The majority of the world has spoken and left the OECD and west out in the cold.
I am not a UK citizen but left years ago for same reason after a short spell. The writing was on the wall even as a non-dom. Taxes have gone up and non-dom scheme may be cancelled if Labour come to power following their last failed bid to scrap it under the Conservatives.
Democracy doesn't really exist in the grand scheme of things. It's just a little game where countries vote their "leaders", etc., but the real rules are set by the minority that control the majority of the wealth.
A recent example: when the IMF told UAE to add taxes, UAE added taxes. Very simple.