Indeed as you say the coordinator would have the ability to add computers without your consent, I will investigate more about this, it is not good.
Discussion
The only thing I can see stopping them from doing this is reputation. It's easily trackable so anyone can see if they do this, and it would ruin their entire business. The alternative to trusting the business is to run your own coordinator, but that's even more effort than setting up NIP validated usernames so most people never will unless it's made into a one click process.
Thanks for this. Gonna follow and follow along about this. Not super technical and trying to find a way to get a lnurl address on my umbrel without much headache. Tailscale sounded like an option but maybe not worth the risks.
lnurl is very easy in umbrel, just install lnbits and then lnulrp plugin, it will generate as many lnurl as you want.
Note that lnurl and lightning address is not the same, in this case lnbits also generates lightning address but you will have to have your domain.
Post: before doing anything, find out what is lnbits, in their own website you can try it without installing anything in the "demo" button.
If you have any questions, please let me know.
I did try this the other day making a lnurl paylink but for some reason it wouldnt work. And the someone suggested it’s because of Tor and that I need to use Tailscale in order to make it work. I’ll keep digging. Thank you kindly.