We should all have e-mail backups regardless of which service we are on. Even Google shuts down accounts randomly. Owning your domain and having e-mail backups makes it easy to switch e-mail services.
It's not like registrars haven't randomly shut down people's domains due to accidental (or malicious) abuse reports.
It might not be successful, but you do have far better options than relying on a third party in a country far away.
It's always a varying grade, not either/or.
Even if it's just your google account being locked for some random reason, good luck getting out of the situation and/or getting in touch with a human there.
If you can't access your gmail.com address anymore then you become locked out of so many other things.
Horrible times when this has started to become a part of my thought process.
Google knows what you watch and post on Youtube, your emails, your google drive contents, your photos, contacts and everything. Any bit of that can trigger an automated ban for your account you can't recover from unless you know a Googler personally or can get through to their only working customer service outlet: the front page of HN.