I see it as The Watercooler is for talk about anything, but the Politics section is just for politics. So, the argument for keeping politics topics in The Watercooler lies somewhere in the centre of a continuum of right verses wrong. But I have an idea.
If the thread of the title is Biden this, Trump that, Republican/Democrat whatever, then it gets moved to the Politics section with a redirect that expires after a month. That way it allows less frequent forum members to keep track of posts that were in the "wrong" area.
If the thread is something like, "Should we tax the wealthiest people", then while that is still a political topic, it is less overtly so since it does not refer to a political party.
Doing this would mean The Watercooler does not get swamped with Trump vs Biden/Harris type stuff and lets those not interested in politics have a place they can hang out in too.
The idea is to thin out the political discussion in The Watercooler. But then on the other hand, the political discussion creates so many posts that it keeps people coming back to the site for more.
Just some of my thoughts to throw into the mix.