> You just type "gpg -e -r receipient@domain.com filename.txt".

I assure you it is not that simple. For example, I'm a HN user, developer since 30 years. I know that you referred to what's known as a "terminal" or "shell" here, but that's already way WAY too difficult for 99.9% of users.

And even in my terminal I can assure you it won't work: "'gpg' is not recognized as an internal or external command, operable program or batch file."

I could install it. It would be a right pain though. and it doesn't help if the recipient of my email can't install it without me sending a long list of instructions!

Meanwhile my dad had zero problems installing signal. There's a difference to how easy it gets.