Why 50-50 equity splits between co-founders are extremely dangerous

This is silly. If you were the sort of person that needed to control the business (or me to control it for you) then I do not want to work with you.

I have held 50% of the shares of an active company since 1988 - and never a cross word. My counterpart and I have always respected the others foibles, weaknesses and strengths and thus we are still going strong.