I am a Tasker enthusiast and when I can automate something simple on my phone I like to. I set a simple task to turn off WiFi when my home network is not detected so my phone doesn't scan and report my location to businesses. However, this functionality is now nonexistent and the developer has to ask people not to one-star their app because it doesn't work. My phone is my phone and killing my ability to use it as such for whatever security theater Google is playing at is why I root my device. Anyone else still rooting for similar reasons?
The inability to relock the bootloader is gigantic security vulnerability. It negates, or entirely voids, a significant amount of a devices physical security, including FDE.
There are other security issues with LineageOS, but that's part of the trade-off. There's nothing inherently sinister or incompetent about that, it's just the nature of the beast.
Regardless, I'm not here to chastise anyone's choice of OS, or to even imply that there is a right, and wrong ROM, there isn't.
I was just pointing out that there are pros and cons, and users should be aware of them when making those decisions.