It has been awhile since I was a SRNA, but I have to admit, what you describe is pretty common. Unfortunate, but common.
Anesthesia people are, as a rule, very meticulous to detail. So it is easy for us to get trapped into thinking our way is the "right" way, so every other way HAS to be wrong, that is logical, right? (I hope you recognize my tongue in cheek)
Of course, the best clinical instructors are those that can realize the beauty of anesthesia is there are very few "wrong" ways to do things, and many, many "right" ways.
These same instructors tend to be education oriented, meaning one of their goals for the day is for you to learn something. While there are those instructors who frankly have far different attitudes. Students are there to lessen their workload, or they are in the way.
CRNAs are the best people in the world, I am not dogging them. But, hey, we're only human. All people have their own individual strengths and weaknesses. So it is a fact of life that not all clinical instructors are the very best educators.
But there are many excellent clinical instructors. I am sure you have worked with them. Enjoy those experiences, and relish in them. It will make the other days easier to get through.
You are right, it is difficult to stand there and take this (pretty much unfounded) criticism. But (IMHO) you are right about playing the game. It is just part of being a student. BUT, I would qualify that with these three points:
1) You never have to take actual abuse, physical or verbal. There are limits.
2) It is possible that there are times that the critical instructor is right. It is possible for an individual CRNA to have fallen into a "bad" habit, that students should not be following.
3) No matter how impossible it seems now, you will learn something from each and every clinical instructor you work with, even the difficult ones. Yes, you have to do the case "their way" when you are with them. But there will come a day that you get to decide what is "your way". And you will have a wealth of clinical pearls to choose from.
Believe it or not, all those little things add up to alot. Even something as small, and seemingly inconsequential as where you put the syringes on your cart, is part of the way you will eventually evolve your own routine, and will have an impact on how you perform.
And there will come a day when YOU are the one who is meticulous about the details of your own routine. Just never forget how that impacted you as a student, so you keep it all in the right perspective, and become an excellent clinical instructor yourself!