They're the same as the implications for using something like Okta as your source of truth for authentication, and Okta is ubiquitous in large enterprises.
It's not not a concern, it is something you can think about and work out how to mitigate, but the benefits to their product of Tailscale hosting the control plane are going to outweigh the objections.
It's not not a concern, it is something you can think about and work out how to mitigate, but the benefits to their product of Tailscale hosting the control plane are going to outweigh the objections.