Signal allows changing phone numbers: https://support.signal.org/hc/en-us/articles/360007062012-Ch...
> As stated in the article, not everyone has access to a phone number and not everyone can maintain the same phone number.
The article does not say that. I would argue that having a phone number is a very basic thing, and if you don’t have it, you are unlikely to have access to the Internet either. Phone numbers are a nice way to ensure you’re a human.