Twitter already has a built-in solutions to it, and has always had it. Just click on the 3-dot button on the kind of posts you don't want to see, and select "Not interested". And engage more with the kind of posts that you would like to have, and stop liking or reposting political stuff no matter how much you agree with it. The algorithms merely reflect your own patterns and preferences, if you find that exhausting it isn't the algorithm's fault.

My Twitter timeline is close to pristine, and on top of it Twitter has even started to promote posts from smaller accounts on the same topics so that I get even better exposure in things I like. It is awesome. You just need to have some hygiene.