The dystopia app is pretty good. They don’t have to pay API fees for the time being because they have no revenue for it, and it’s intended for blind and low vision users.
It supports moderating as well as chat. /r/DystopiaForReddit
Imho there’s a few users who generate and curate a lot of content. It’s likely a good portion these terminal online people will leave Reddit, because they’re the ones using 3pa. For everyone else, scrolling quality will decrease, enhancing eternal September