Why are you lying about what security guarantees Signal say they offer?

https://support.signal.org/hc/en-us/articles/9932632052378-How-to-protect-yourself-on-Signal

https://support.signal.org/hc/en-us/articles/9932566320410-Staying-Safe-from-Phishing-Scams-and-Impersonation

Even your example of the Twilio hack is far less relevant now since they added transparency logs, which means it is much harder to impersonate you without detection even if the hacker can control the telco

https://support.signal.org/hc/en-us/articles/10223569377562-Automatic-Key-Verification