Yeah, the first dog in the video at least seems to enjoy it, since he is wagging his tail when they are prepping him for a second go.
1st of all, I don’t think there is a “second go” in this clip.
2nd, I can’t tell there is any wagging.
Last, and incidentally most important - let’s please dispell the myth of tail-wagging. MANY times “wagging” is a danger sign, or sign of submission or fear. It depends exactly how it’s done, and on other body language.