I tried building LOS from source recently for my OnePlus 7 Pro, which is mainlined into LOS. Installing build prerequisites was easy for me because I use an OS with a package manager and a large catalog of packages. Then, it started downloading the LOS git repos. After a few hours all 58 GB of the free space on my disk was used. I cancelled it and will just stick with the provided LOS builds. Time is worth something too.
All the privacy aware people should actually do is to check the list of officially supported phones on the LineageOS site before buying, then spend 15 minutes to read the installation instruction and follow it.
Plus you get updates.
As far as companies go... Will Microsoft sell you a copy of one of their old unsupported OSs? Of course not.
It's a LineageOS fork which bundles MicroG and several apps to make a more usable out-of-the-box OS.
They have also re-added frequent builds for many of the phones that Lineage had dropped - including the OnePlus X which I have.
Infosec Handbook did a rundown when they first came about: https://infosec-handbook.eu/blog/e-foundation-first-look/
Then they did it again, more recently: https://infosec-handbook.eu/blog/e-foundation-second-look/
There's also this site: https://ewwlo.xyz/evil.html
I think this is a step in the right direction.
As for old builds being removed, this is completely asinine. and their rationale really doesn't hold any water. You can likely find an archived version for your device, or continue building from source, 14.1 still gets Android Security Bulletin patches, for the time being.
0. https://github.com/LineageOS/charter/blob/master/device-supp...