How is this relevant? The bug was in this instance triggered by teams, but it could have been any other calling app. And I know at least a few organizations that use teams to communicate with people engaging in a private capacity - our childcare for example uses it to communicate with parents, schools to teach remote, our kids hockey team,…

Work is not the only reason reason someone may use Microsoft Teams. People in school or university use it too, and they sure as hell won't provide you a "school phone".

While I agree it is mainly the fault of Google here with not properly sandboxing, it would not surprise me if mobile management software has the ability to block phone calls to other countries and with that accidentally banning emergency numbers. I get all kinds of big (bit less serious) issues with my phone after installing corporate mobile management software and the incorrect configuration of it.