Indeed. Even most technical people don't have experience setting up VOIP stuff. And needing some techie's intervention just to create an account is not beneficial for a company's user base. Calling this a non-issue is being ignorant about how usability works and influences user engagement.

If they needed signal it be because someone like you told them to get it. Non issue for the billions that use WhatsApp and Facebook.

Your uncle in Vietnam has a smartphone, no internet, no number, and NEEDS the signal app? He might need solar, electricity and internet first.