If your phone gets stolen, meanwhile, you may find yourself unable to log into the police's portal for reporting it.
I know some government may do this with intent, but i imagine many governments simply never thought about it, or no citizen ever didn't accepted a "popular smartphone OS provider's ToS" and challenged that government requirement. I know some make offline alternatives very inconvenient, but that still technically legal.
However it's one-way only at the moment, there's no way to use it for two-way communication.
I think that companies providing certain basic services like email or messaging should eventually become branches of the government. This is the only way to provide these services with subsidies without enshittification.