The main issue is how opaque the system is, though that may also be a feature to limit people’s abilities in figuring out how to bypass various restrictions. No one should have to risk the existence of their channel and livelihood to some unknown automated algorithm. Although the reddit post only cites videos from one person running into this issue, the first video link has comments referencing someone else so I found a video from that other person as an additional data point.
I imagine youtube has the same automated system comply with eu, but the videos linked in the reddit post mention how quickly the appeals were denied, so accessing and contesting decisions alone doesn’t fix the automated system problem.
https://youtu.be/vQ-RXzzU9u0