I am surprised the people running the table didn’t call this out. When I first played craps it was at a busy table in Vegas. I was passed the dice to roll and I didn’t throw them hard enough to hit the back wall. The people running the table said the roll didn’t count and asked that I make sure they bounce off the back wall.
That's correct, but expert dice manipulators can usually throw a slide so that it hits the corner at almost 45° and not the wall, which gives them a statistical edge.
Craps is technically deterministic and there are tall tales about magicians being able to narrow the odds on a throw by throwing very precisely (a legal throw, not a slide), but I have yet to hear of a confirmed case here.
Roulette and blackjack are just easier games to beat.
I would argue that it is. If the casinos do not want it to be they are free to automated dice throwing. As long as they give option or illusion of there being at least a chance to influence result. To me it looks like it is a skill and they should have monitored how it was played in these parameters.