I don't have any strong hatred of TikTok myself but usually HN are a privacy concerned skeptical bunch and this is very weird.
There is another comment somewhere down that claims that any positive opinion is "paid or smoking crack" and that is too common when people feel threatened by something.
Many of the things we do in life are simply a Waste Of Time (if we discount being entertained as a worthwhile pursuit). Commenting on HN is a waste of time. Reddit, Facebook, Chess, Gaming, Crosswords, Reading -- total waste of time. It's a bit strange when something comes along that people choose to entertain themselves with occasionally and invariably the "iT's AdDiCtInG!" arguments appear. Bizarre.
Honestly it's kinda fun watching Americans tangle with the "oh no this ubiquitous platform is controlled by a company beholden to a foreign power I disagree with but have no say in or control over!" conundrum for once.