I would love to sometimes filter out any and all political posts, I think having this enabled as default on some instances would also be preferred by some users.
I’m a software dev, if it doesn’t require a lot of work I’m happy to make a Pull Request for this feature, but do people want this? Is there anyone I should maybe talk to before starting, or anything I should know?
Who decides what is “without a doubt”?
Everyone’s personal barometer is going to vary on that wildly.
The users and mods would decide that. Sure, mods can abuse it, but they already have the means to censor someone (ban users, tag their post as NSFW, delete their posts). I don’t expect it to be perfect, but it still would be an improvement, especially in communities that you would usually expect to be light-hearted, such as showerthoughts or mildlyinfuriating.