I think it is more about us being culturally less friendly towards secret court orders, and with just handing over customers to the authorities without proper process. Does our sigint operations monitor Mullvad's exit and entry nodes in Sweden? Maybe, but I do not think Swedish authorities will be able to force Mullvad's staff to silently add a backdoor. I mean they have not yet managed to get Bahnhof to comply with the current law since Bahnhof argues that some EU directive makes the Swedish law illegal.

To their own citizens sure, but they have had absolutely no qualms about invading the privacy of those who are not their own citizens, which is the entire point of the 'Eyes' programs.

Unlike many countries includingany European countries the US does not require logs to be kept.

Also legally national security letters can not require monitoring of the contents of communications but only compel the recipient to produce existing records regarding the communications. For a VPN service that did retain logs a NSL could require them to be turned over; however, for one which doesn't there would be nothing to turn over and a NSL can't compel the collection of such information when it doesn't exist. A NSL which tried to exceed these restrictions can be fought in court.