I'd say that depends on what you classify as "ill advised!" Just because a guy is wide open from 3 point land does not, in and of itself make it an "advised" shot! If he's a poor 3 point shooter than practically ANY 3 point shot for him is "ill-advised!"
Of course, if the shot clock is running down and a teammate throws him the ball with just a few ticks left on the 24 second clock then he has no choice but to chuck one up, generally speaking. If he's a fair 3 point shooter and there are 15 seconds left on the 24 second clock, even then a wide open 3 pointer might not be the best option! Reminds me of what Larry Brown once said on a sound bite directed at Allan Iverson as he was coming off the court from a time out. Larry said: "Allan! You see that shot you just took? We can get THAT shot ANYTIME we want! How about we show more patience and work for a better shot, huh?"
Mitchell has been taking "ill-advised" 3 point shots on a regular basis this year, and I suspect the coaches have told him so! Mitchell, right now is NOT a good 3 point shooter and he's taking them with way too much time left on the 24 second clock, and I doubt seriously that the coaches are happy about it and encouraging him to continue in his wayward course! Frankly, there are only about 3 guys that make "ill-advised" 3 pointers on a regular basis......and one of them is Steph Curry. You can figure out the other two.
I've been noticing in the box scores that the 3 point shooting from some games and team is atrocious! Enough to gag a magot!