So this reminds me of the dude that was doing repairs on teslas from a few years ago -- The Rogue Tesla Mechanic Resurrecting Salvaged Cars [0]. He runs a channel called Rich Rebuilds[1] (I'm not a subscriber) a company in New Hampshire that specializes in repairing Teslas, and has a recent video on his relationship with Tesla (and the community of fans)[2] (which I haven't seen yet, but watching now).
I don't follow this channel but I do not remember Tesla being particularly encouraging of the trend, similar to other defacto closed ecosystems. They're definitely not egregious but just a little bit closed-by-default.
It sounds like Massachusetts is pushing for laws to make it even easier: https://grist.org/politics/tesla-want-to-fix-your-own-massac...