Why is MS all of a Sudden requiring to have an Alternate email address?

I was going to create a MS account but all of a sudden I prompted to create another email address to get the verification codes.
This is NONSENSE as Email Verification codes are not secure as they can be bypassed and i do not feel like creating another email just to get these codes.

Why not just use passkeys along with the Microsoft Authenticator app which are more secure. Why go with the old fashion of having Email verification codes?

At least a phone number option would have been more acceptable . But still not secure.

So eventually, I stayed with my other email account.

Microsoft requires an alternative email or phone number during sign-in when it triggers a "Help us secure your account" prompt, and there is no way to permanently bypass this step.

Because they ran out of emails to collect and now they need your help to collect more.
[TROLL]

No, seriously, FreeBooter is right. It is a way to help you recover a lost account.

Can I just create a temporary throw away alternate email account just to continue with the setup and then after that delete the throw away email account?