Most political things don't generate huge amounts of platform advertising money probably on TikTok... The autopilot ad revenue is easy for them to make on political content as well because right now, there's only a few different aspects competing with each other... It's likely that a lot of users don't primarily go to TikTok for political content, it's primarily music and social influencer based as well... This is why TikTok allows users to avoid political content, it's not a "cash cow" niche for them.
Of course, I'm just saying that there are more fart jokes, memes, and makeup tip videos than political ones on TikTok at this particular moment in time.