Google doesn't have "messaging things" anymore. The default messaging app supports SMS/RCS and that's it. They tried the unified SMS/proprietary message protoc

Google doesn't have "messaging things" anymore. The default messaging app supports SMS/RCS and that's it. They tried the unified SMS/proprietary message protocol approach with Hangouts but that was short lived. I'm not even sure if it was ever at any point installed by default on a majority of Android phones. After Hangouts, they tried Allo which did not support SMS and was not a replacement for the default messages app which did support SMS.