to @DoctorClu, I agree with @claude0001, but LineageOS also has it drawbacks, over stock, though for some they might not matter. Pros and cons....
Personally the lack of multiple key-layouts, that was broke a few versions ago, makes it almost useless for me (use it for tests only). And there might be some app that have very high security requirements that might not work.Could e.g. be bank apps, or some apps for putting official papers like drivers licence or similar identification apps on the phone. Some might work fine though, but not all.