> Users can “unlock” the full 15GB of free storage by adding a phone number to their account.

On my last login to twenty years old Gmail account I was really surprised how it's possible to dismiss the "enter your phone number" screen, while other email providers deman 3d face scan and bank statements. Well, here we are...

On the other hand I have twenty years old Gmail account which works without them knowing my phone number, and access codes exported maybe decade ago and they are still valid. For a service I paid nothing, that's beyond impressing.