I don't know what people are mad at. I assume that the users with Prime still seeing ads aren't happy, but I have no idea.
Me personally, I don't like to have my launcher selling data to Meta/Facebook. I also can see the change in strategy, from where a paid app supported development, to one where tracking and ads is at the centre of the monetization of the app. That's something I try to avoid these days. I prefer to pay or use open-source and donate, and have a clean app.
The code is on the launcher itself. Prime is a separated app that is supposed to unlock paid features and disable the ads. I've seen some comments on Reddit of people claiming to have prime and seeing ads, so I don't know what's going on.
It's crazy how much longer battery lasts after removing Google Services from Android.
Unfortunately for me, not only some of my apps require Google Services, but I also use a Samsung... I don't even have LineageOS available. Even if I did, custom ROMs on Samsung can't use VoLTE, which is a problem as they're shutting down 2G/3G where I live.
I used "Lawnchair 15 Beta 2", which was the latest available on their site and Github 4 days ago.