That describes relatively easy for you, but not for the average person who can’t even be bothered to change the default ringtone.

The challenge I've found when looking for instructions for flashing one of my old phones is the assumption of knowledge some rom builders have, or perhaps an assumption about their audience. This seems like it has the potential to bit someone in the ass because if they're relying on other sources like the lineageOS wiki or forum posts elsewhere for example there's no guarantee it'll stay available, complete, or relevant to their variant over time. It's an added burden for what is a gracious volunteer role, but it's a handicap if they want more people using the fruits of their labor.