@kkarhan
How can you claim something you can't evidence?
I literally included a link to the evidence. Here's the link again: https://signal.org/bigbrother/cd-california-grand-jury/
Signal got a judicial subpoena from the Central District of California. They were represented by the ACLU, and they responded with the only bits of data they had: the Unix timestamp of account creation, and the timestamp of the last connection.
It seems like you are simply ignoring the evidence (on purpose).
demanding a PhoneNumber
All big messenger apps collect phone numbers, in order to prevent spam. Unlike WhatsApp or iMessage though (I mean technically you can find iMessage contacts by Email address, but no one does that), you don't have to share your phone number with contacts, in order for them to be able to message you. User names exist for this exact purpose: https://signal.org/blog/phone-number-privacy-usernames/