Why is it that communities that claim to be “strictly apolitical” are always the ones pushing some ideology right on the front page while banning any ideological discussion?

I find it funny how the rules say something like “NO current politics” and “discussions limited to events over 20 years old,” yet the same community that pretends to be an apolitical space is the one openly promoting a very current political ideology right on the damn banner.

It’s like they’re saying, “Hey! No political propaganda, okay? [except ours].”

Makes me wonder why that happens. Why is that?