I highly doubt the US intelligence agencies aren't tapping StarLink. We already know for a fact that they were/are tapping Google and other carriers (if they didn't already have actual backdoors made for them by the companies). We also know that the intelligence agencies also like to either flip employees or simply have their own people get jobs there and get access. Being honest, for all the bans on using Chinese equipment/devices for fear of spying (even when other governments were already analyzing and finding nothing). I don't see why any other nation shouldn't be doing the same for US stuff on their infrastructure/networks.

We are historically not very trustworthy, and have been basically one of the top nations for getting into shit that wasn't even made by us (along with Israel) like the Stuxnet attack. We accuse other nations of shit while damn sure doing it ourselves, like a cheater that then constantly accuses the other partner of cheating.

Obviously any nation trying to use something like StarLink would be foolish to not use any and all methods for encrypting all traffic.