I’ve never heard an adult I interact with express that. My Android using friends don’t care.
[1] https://www.wsj.com/articles/why-apples-imessage-is-winning-...
If having Green Bubbles is a negative connotation. It would seem it's because Blue Bubbles have a positive connotation.
It does not seem like a stretch that someone talking like that feels elitist because they have an iPhone - which they express by your lack of Blue Bubbles.
Can iMessage be used in Android? No.
They even put early effort into making Macs send/receive SMS via the iPhone. Google didn't do something similar until recently, or did they, hard to tell with their chat app naming.
I guess I haven’t heard it put that way.
It's dumb, I hate smartphones.