After a while of noticing the shades of grey, you come to realise that those at the extremes see things as purely bivalent. i.e by their definition if they're 'white' and your white has the merest hint of black in it, you're against them Q.E.D.
Getting involved leads to a lose-lose self-reinforcing situation. Even opining whilst on one's own turn will get you dragged in if you're noticed by one of the extremists.