Enforcing MFA or registering with phone numbers wasn't required on email accounts back in the day.
What about the part about forgetting which number it is? Maybe I'm just biased, having had the same number for the last 15 years? I know I had a few numbers when I was living in other countries and those are still written somewhere but of course no longer accessible or under my control.
Still though.... well I'm on both sides of this lol
I had not considered that; thank you.