They aren't. The bubble color thing is an exaggerated claim and a lot of whining from a bunch of clowns. No one actually cares in the US except for a bunch of children (who are always prone to following trends for the sake of following the trend) and a handful of immature adults. The rest of the country doesn't know or care
We can disagree about solutions, but strawmanning stuff is dumb, and then dismissing the problem that you strawmanned is even more dumb
The strawmanning is done by the people claiming iPhone users are, as a whole, excluding Android users from their communications over it. That's what I'm rebutting, not that MMS sucks. Only children and immature adults do that. The vast majority of people don't care. They either use MMS and accept it sucks or switch to another service, they don't exclude people over it.
Thankfully, here outside America, this isn't an issue: absolutely no one uses SMS or cares about this stuff.