I've nver seen discussion of politics on forums do anything but turn into hate-filled, dogmatic posts which aren't productive at all. Every political thread here turns into the same takes and HN imagines itself as intellectually better than others. It's not interesting or productive. If talking about politics fixed things, why are politics worse today than they've ever been? There's no costs and no solutions to ranting about politics online.

The vast majority of people do not want to get on a forum to escape their life to see every more or worse content about their daily lives.

You're right, there needs to be some outlet but when people propose this it's because they are sick and tired of politics and the injection of them into everthing is not helping those politics, it just makes it worse.

Tons of people aren't political creatures and want nothing to do with politicians. This notion that more politics will fix thing isn't born out by Reddit, X, the US Congress, Brexit, etc. It's too easy to divide and manipulate people.