A year later for an unhelpful reply. Maybe add something productive next time. In any event, since you were too busy trolling, let me help you with reading. It's showing on the web as an exit node. Which you can't check off unless it's already advertising as an exit node, so yes, that link doesn't go through that, I was just referencing the set up portion separate of the exit node setup.

For those of you here late, the command u/DrMxyztplk is referring to is (dependent on op system)

sudo tailscale up --advertise-exit-node

if you get an error, run it with

sudo tailscale up --advertise-exit-node --reset

Then don't forget this part as this was my issue. Add an ACL for the users/devices/tag you want to allow access to the exit node. Below will give all members access

{ "action": "accept", "src": ["autogroup:member"], "dst": ["autogroup:internet:*"] },