Yeah, the guy this is about is only 6'3" though. I saw some tall guys being shown to only bench 6-8 inch (no where near the chest), squat really high etc. while I was able to get better results with standard tech. I think that in most cases (especially only 6'3") they can still do the normal form.
Almost all serious powerlifters incorporate both high squats and partial benches into their strength training. Even the Westside boys, who do almost nothing but box squats, have boxes that range from 2-3 inches below parallel to 3-4 inches above parallel. Form doesn't change if worked properly, just the range of motion. Once you become comfortable with a squat that's 3 inches high, it's nothing to drop down an inch, and then another, and then finally to parallel, all the while gaining strength, experience and confidence. And I can't emphasize enough the importance of a wide stance, especially for taller athletes.
And, many, if not most, powerlifters do board presses, with boards up to 8 inches thick sitting on their chest. Heavy board presses (up to 125% of PR) are the single best exercise I've found to enhance my full benchpress.