This sounds like hyperbole. I've never used tailscale, but reading that doc:
Installation: Install the tailscale client
Sharing: Click on the share menu and select tailscale
It's a beta feature so there's also a switch you have to flip for now.
Meanwhile, for Apple:
Installation: nothing.
Sharing: Cmd+C/Cmd+V
you don't need to believe me. I use it daily. don't know why you're so defensive lol - it's our own opinion. fyi I didn't have to do anything for this to work (clipboard laptop to phone)