To be fair, Signal has gotten a lot better and a lot easier to show people how to sign up. Back when I did my migration off FB Messenger it was a different story and Telegram was basically on par with Messenger
My initial Signal onboarding was long enough ago that I don't remember it. I do remember some general unreliability about eight years ago, but it's been solid during the past five. Several nontechnical people I've recommended it to during the past five years needed zero handholding.
