Have you heard/read about how this isn't why some folks are doing this? I suspect part of the reason for this thread is that people don't feel like those doing this are doing so to match their personality and genuinely being more polite, but more to work around corporate social media's algorithms purportedly downplaying more "crass and aggressive" language.

It's not that they're offended by polite language or attempts to be friendly, but they're put off and made uncomfortable by what reads as performative kindness/hospitality. Like have you seen the movie Get Out? Or read/seen the movie adaptations of The Stepford Wives? For some folks these gestures, which may be genuine, can unintentionally come across like the eerily accommodating/submissive people in those stories.