Well their approach allows them to deliver software that works without being inundated by issues related to someone’s peculiar set up. I don’t think ‘hostile’ is a very fair assessment.
I totally understand that they don't want to support peculiar setups, and I get why non-standard setups are labeled as unsupported. But actively asking for your software to not be packaged, even under another name, and threatening to change the license to prevent that [0], is a whole other ballgame, and I do consider that hostile. Hopefully this was just an extreme outlier, but the desire to not have people use it in ways the developers don't like, even if they aren't being bothered with it, seeps through in a lot of their work.
Of course it's their right to steer their project and decide what you can and cannot do with their software, but it does make Home Assistant significantly less attractive for lots of people that don't agree with all their choices (and judging by the mixed feedback in this thread, that's not a negligible group).
FWIW, I am in the same camp as you. They seem oddly hostile to FOSS development (as shown in your comment and the top comment you replied to), and as such, I hesitate to use it for that reason.
