It was far less political in the past, now I visit the front page and it's all politics all the time. Note that I don't log in and I'm just browsing the front page, so it has nothing to do with me selecting subs.

You won't notice if you don't use all/popular or frequent extremely large subs.

My recollection is that before subreddits were a thing, Reddit was not that far off how this place is now.