bein_hasdorim, what I am asking is not if there are some that are very ‘frum’ and excellent places to daven.
I know there are.
I am asking if any of them anywhere are not proper places for a frum Jew.
Out of all Young Israel places everywhere, is there a single one anywhere, that might be a problem halachically, for someone to daven in?
To put it another way, does the sign saying “Young Israel” automatically guarantee, that it always is by definition, a kosher shule to daven in, always and everywhere without question, under any circumstances?