Why is Tmo the last major carrier to release Android 12 for the $1,800 z fold 3 and doesnt bother to resond to customers inquiring about it.

I need the Android 12 update for my $1,800 galaxy z fold 3 phone that Verizon and at&t have already given to their customers, but what is even more unbelievable is that T-Mobile does not even bother ...