I believe this is done partially to dissuade bad actors from gaining easy unverifiable access to hardware and software thus rendering anti theft technology ineffective. If you mandate all repairs to be done using a verifiable (and paid for) repair key which you supply to vetted people, it becomes that much harder to replace the anti theft module as a common thief. Even large scale operations would then be harder to run as they would require a fence of sorts to use as a repairman. Of course that fence would then risk their credentials and so on...
Slow integration actually being enforced by uncomfortable laws is the only way we get to enjoy diversity and multiculturalism. The friction is otherwise too large. I would personally like an utopia where we all magically get along no matter the culture, race, ethnicity etc. but the real world is a different pair of shoes.
Second hand sofa market is surprisingly good in all cities ai lived in (Europe) You can get great stuff for less than 100eur. Good luck figuring out there transport and cleaning though.
I know it's not practical because of select few bad apples, but giving a year's notice to the affected people, letting them finish up the work and mentally prepare, and all the while coaching them through the process of finding a new job seems like a humane thing to do.