Signal founder "Moxie Marlinspike's" real name is (((Matthew Rosenfeld))).

That should tell you all you need to know.

These aren't flaws. These are deliberate insertions meant to suck up your information.

As if it matters, the Signal could be 100% secure and they can still get your message content because they simply own the OS and this the keyboard and display hardware, no need to access the data in transit or even inside the app.