[mcsniff]

It can be annoying to get it to work with your carrier, but I would hardly call it effectively unusable.

[bl4kers]

Here's the 3-year-old, 1k+ comment discussion that begs to differ: https://discuss.grapheneos.org/d/1353-using-rcs-with-google-...

It's gotten inoperable on AT&T recently, and the Graphene team doesn't seem to care because RCS isn't completely E2EE (due to Apple dragging their feet) and therefore not a priority