Any truly competitive pitcher, with a real fire in his belly, is gonna be "****ed" at a hitter trying to bunt for a hit in any situation. But, especially so in a possible "no-no" situation. His thoughts toward a hitter is; "man-up" and try to hit me big guy! If they are to give up a hit that want it to be a legitimate one. Bunting isn't hitting.
Nolan Ryan would glare at guys that tried to bunt and often suffered his retribution. I can remember guys being terrified to bunt off of Gibson or Drysdale.
Now from the other side of the ball, I want my guys to do anything to disrupt his rhythm and get something going. I would not, however, have a guy bunt late in the game to spoil a no-no. I would do it in the middle innings when I've seen that the guy is hot tonight and we are going to have to do something to get an opportunity to score.
So you have to do what you need to do to win but you aren't likely to win a game like this with a bunt single in the later or final inning. I do view it as kind of "bush" to just try to spoil it with a cheap bunt. JMO