M365 Personal and Family plans have support for custom domains for email use. Those plans have tech support for those emails built in too.
And no, account management isn't "confusing". Users are foolish for engaging with a cloud enabled world without proper safeguards. It's our job to teach them, and to bill accordingly.
And yes, desktop apps are dead. So are on premise servers. Everything is K8S and microservices. Congrats, you've finally joined 2021!
Most of us here are completely irrelevant, and will only see shrinking returns over time unless we adapt. I can build K8S and similar cloud infrastructures on premise... can you?
Outlook.com is a sales engine... yes this is truth. Microsoft needs smacked for making buttons that don't work certainly... but yes it's a sales engine. This too, should be apparent. NOTHING IS FREE. But there does still need to be control... and yeah... it seems we don't have it in this case. That's beyond bad.