Branduil
Hero
This was also a problem in the 5e PHB, even though it explicitly stated they were sample backgrounds and RAW you can customize backgrounds as much as you want.For some reason people just refuse to accept that custom background is the default, and all example backgrounds can be freely customized. It’s bizarre.
I think the issue is that it's just a giant list of backgrounds without any indication in the backgrounds themselves that they're just suggestions. I would just attach random character names to each one to make it clear "this is just one example of a background, it doesn't have to match yours."