I think TikTok will stay for a while but you are onto something regarding the deception. An issue with TikTok is that the shelf-life of its content-creators is pretty short. Usually they hit it big with 1 video that gets picked up by the algorithm. And then all their subsequent videos are them trying to recapture that lightning. You can keep it going for a bit and develop a decent following but eventually it gets boring.

How do most users interact with TikTok? through the FYP (for you page) which is the algo curated feed that you can endlessly scroll through. From my observations - FYP starts out by showing you content from creators in your geolocation (drains so much battery cuz it loves to use location services). From there it will try to associate you with trending hashtags in content you are more likely engage with. Most important engagement metric is watch-time. So if you complain that your tiktok is full of porn/horny content then you probably have high watch-time in these areas. It will alternate between showing you vids of high user engagement (1M+), medium engagement (<1M) and low engagement (<1K) in the trending hastags/topics it associates with you.

So the content and trends move very fast. Eventually your schtick gets old.