Also signal complies with all police and government request, even if it's just meta data "supposedly".
If you have evidence that unencrypted data might be leaked from Signal (except by a rootkit on the phone, tampered update or by someone having physical access to the phone) you might have a real scoop on your hands and you should contact project zero or someone for a bounty and then a journalist so you can bask in the glory.
If you don't have anything I suggest abstaining from writing in a way that suggests that until you find something.