LineageOS is great, my one complaint is that it is almost never available for the phones I own. You basically have to get phones according to their popularity in a certain subgroup: for example currently one HTC model and two LG models are supported, but close to everything from OnePlus.
I know I can get unofficial builds, put apart from the sometimes quite severe missing features (calling or camera not or only partially working) I don't want to trust random people on a forum to provide a build of an OS without including malware. It just looks like a prime target for all the intelligence services of the world, and a nice target for hackers. With official builds there's at least some accountability somewhere to mitigate this.
I know I can get unofficial builds, put apart from the sometimes quite severe missing features (calling or camera not or only partially working) I don't want to trust random people on a forum to provide a build of an OS without including malware. It just looks like a prime target for all the intelligence services of the world, and a nice target for hackers. With official builds there's at least some accountability somewhere to mitigate this.