Digital is like fishing with a hand grenade.
Nonsense - with film you sometimes had to overshoot to make sure you got the shot. Often you can shoot less with digital as you know for sure you got the shot. Though there are plenty of talentless machine gun photographers around who did rubbish work with film as well.
I had an idea for a dance photo last year and did a few practice shots to work out timing, which were OK, but lacked something. I then added a second person, took one shot of the new set up and that was it, got it in one. Didn't bother shooting any more of that set up.
As for spending time working on image - this is actually a JPEG straight out of camera with just a lampost in background removed in a few seconds- which would be much harder and time consuming to do with film.
Besides when doing dance photography it is very useful to be able to show the subject what they or I am doing 'wrong', to help fine tune the shot, again you end up taking less shots.
Also with some people you have to waste a bunch of shots to get them relaxed, some photogrpahers shot away with out film to get subject warmed up, potentialy missing a good shot, now you can shoot immediatley and not worry about warming up costs.