What TikTok ads are you referring to? Users often get completely different targeting, but the ads I've seen have been mainstream fast food and then dumb consumer crap like moon lights. Also Old Navy and some car company.
TikTok is really the anti-"influencer" platform. It is a very wide, long tail and doesn't seem to concentrate like many other platforms. People seem to be completely ordinary, versus the delusion that Instagram as an example is pitching, of aspirational perfect living.
Algorithmically TikTok seems to assign very little weight to the creator compared to other venues. Single hits that aren't achieved again are common. Versus say Twitter where if someone has a hit, the platform presumes that every tweet from that person is a brilliant insight.