Voyager for Lemmy, at least for me, pushes political content like crazy.
No content is being pushed to anyone, Lemmy's algorithms are very simple. It's just there's a lot of it.
You can unsubscribe from or block the politics and news communities, especially worldnews, and it should get rid of a lot of it. I find the experience to be better when subscribing to the stuff you want rather than remove the stuff you don't want.