Agreed. I tell them why I'm concerned, and what I'd like US to do about it. The great majority are receptive.
Saying "start a phenylephrine infusion" as the tube is taped and you leave the room isn't as effective as "I'm a little concerned that this guy's arteries aren't as clean as advertised, so I think we ought to keep his MAPs above 75 the whole case, do you have a bag of phenylephrine made up or would you like me to get it ready?"
Most of them want us to be there to help, and they want to be respected for the skilled advanced practice nurses they are. A little politeness goes a long way.
I did have some trouble recently, not sure how to best handle it in the future. The CRNA was just ... rough. Intubated with a sharply bent stylet in place and just rammed that thing in to the hilt. Head bobbling around like a rag doll when positioning. Later, suctioned with a yankauer like he was aiming for the spine. Plastic tape ripped off the eyelids of an old person like he was starting a lawn mower. Etc. I'm not sure there's a polite way to correct that kind of thing. I said "hey when you're intubating with a stylet, just get the tip past the cords and pull the stylet, otherwise the sharp angle on it will scrape the trachea and cause pain, coughing, possibly bronchospasm" and "old people have fragile skin, plastic tape can cause skin tears" and he just looked at me like I looked at the obnoxious attending in residency who fine-tuned my tube taping. I feel like this is an issue that goes beyond skill or knowledge and I have no idea how to correct it.