I wouldn't mind if EU made it mandatory for them to be. I really hate that I have to use Whatsapp because it's the sole way I can stay in touch with people I must be able to contact.

I also wouldn't mind "swapping" to contacting my friend via Discord if the federation was made so I could use a different means of contacting them such as Revolt.

I know Beeper exists, but you still need to have account with the platform you don't like and in Whatsapp case's, you need Whatsapp installed.