Signal Will Let You Sign Up Without a Phone Number — For $3

You mean they want to identify you from your credit card instead of your phone number? Bah.

They claim it’s “zero knowledge” proof through Google pay, meaning that Google will know you paid Signal, and Signal knows you paid them, but there is no link between the two that uses your PII payment info to identify the Signal account. I’m inclined to believe them.

Google will know you paid Signal

That’s not ok either! Just stop playing these games and stop obstructing self hosting. When they come to round up all the Signal users, they won’t care what account belongs to who. So there should be no database that identifies the users.