[hnarn]

I don't think the service is so much "tailscale for mullvad users" but the other way around, it's intended for existing tailscale users to get an "exit node" of sorts in their tailscale network without having to set it up themselves.

Tailscale's business model has never been anonymity, last I used them they even required either a Google or O365 account to even use the service.

You might want to look into Headscale[1] instead, it's a server-side implementation of Tailscale that you can self-host. It comes with its own drawbacks but from what I've seen it's worth it if you want more control over the network.

[1]: https://github.com/juanfont/headscale