Blame apple for that. IPhone has this proprietary messaging app pre-installed which is probably super convinient for the ecosystem but uses some obsolete SMS protocol to communicate with android phones.
I think recently this has gotten better, but only because beeper and the EU pressing on them
He's just an entrepreneur who really wants to play the Tony Stark role but doesn't really know much more than the average tech hobbyist, so now he's doing a bad-mediocre job at both things.
Now this is the way