Well, other than the "35k" being wrong what am I looking for?
While I have not flown the 163 as often, I've done that kind of maneuvering in her at those altitudes. Both 47 kills look normal to me, and other than the gunner on the 17's not being able to hit the ground with their hat in 3 tries (163 being predictable; sorry bud, but you were), I fail to see anything weird.
I remember Snailman making a post about how things will look different between players due to lag, so it was that. BB saw some weird stuff and called that out not thinking of that. I've seen plenty of weird things, but I've not chalked all of them to "hacks". Sure, I joked by telling Snail he was "hacking" a few times, but I made sure he knew it was in jest.
The only thing I would've considered a hack was way back when, when a set of 24's were turning into an unkillable dot at at around 1k and closing, only to "materialize" when they fired before turning back into a dot. Was acting like a skipper missile in Wing Commander (except turning into a unkillable dot instead of disappearing completely).
Regardless, I am failing to see an issue in the video. And if you decide to call this "Ankle Humping", you do you boo, you do you. I am calling it how I see it.,
