You've never watched Curry play, have you?
If you can make the shot at a high clip, and are wide open, it's not a bad shot. When he chooses to do it, it's also often with the defense not set and one or two guys with him who have a legit chance for an offensive rebound if he misses.
The shot clock doesn't matter, that's old school thinking. Teams take as much or as little of it as they need to get a good, high percentage shot (unless it's late in the game and you need to eat it).