Games like Among Us, RV There Yet, Peak, Lethal Company, etc. I don't mind them so long as there's no woke elements to them, though I've never actually played any of them myself. I have two groups of streamers that I like (Fooster/Fisk/Olafpawbelt and Splitsie/Capac/TFE/Shack) that play them from time to time and it's pretty enjoyable watching them. These sorts of games strike me as games that are more meant to be watched than played yourself. I doubt many of them sell that many units, and they typically are only popular for a couple of weeks before being replaced by the next one.
I bet a lot of copies sold are people who think 'oh man, this looked like fun when I saw $streamer play it, I can't wait to play it with my friends' and then they never do. They seem to be pretty cheap, so if an indie dev can provide a few weeks of enjoyment for $9.99, honestly there are worse ripoffs in the gaming world.
Streamerbait. They're... I'll say ok to watch, but they just don't have lasting appeal, IMO, particularly to play long term.
You need a good streamer who can either carry chatter on with the chat or a group of other players who all play off each other pretty well.
You said it yourself:
It's enjoyable watching the people, not necessarily the game.
See also: : No one talks about Amogus anymore. Remember that game? It's sitting at under 2,000 average Twitch viewers these days.
https://www.twitchmetrics.net/g/510218-among-us
It sits at #106 for streamer hours.
https://www.twitchmetrics.net/games/viewership?page=3