The fantasy that BEVs are 'much simpler' than ICE vehicles has confused a lot of people. The reality is that the complex electronics, battery management systems etc can only be worked on by Tesla techs with access to DRM protected diagnostics and restricted access online workshop manuals. All modern vehicles, whether ICE, hybrid or BEV are incredibly complex so fewer and fewer people can or want to work on them.
This is a huge problem going forward for everyone. We need to get back to the VW Beetle/Golf etc era where it was possible for even a knowledgable owner could perform major repairs on the vehicle they own, and which were bread and butter for local mechanic shops