In case you're looking to improve your FPV throttle management, I made a small tutorial on what I did.

I don't think this 100% tracks for thumbers. Might work for pinchers.

My T-Pro is really loose on the throttle axis, not floppy loose, but pretty loose. I tend to fly in a very specific way though with constant throttle and applying throttle bursts when needed. Some of that is watching how other pro's fly that are also thumbers. At the same time I also don't do the level of proximity flying you do, preferring more open environments for my flying.

Interesting video never the less.