From being on the other side of counter from you, I personally wouldn't. I DEFINITELY would do what they are doing.
They charged $115 to do all the work they did. That work included not draining the ice maker water valve. It might've been more if they did, I don't know. Maybe they flat rate. I'm more fair to everyone and just bill the time it takes to do the job, and not bill the time it didn't take to not do the job, whatever it is.
I just like playing Devil's Advocate; like making people think and converse. Then you get the ones who go off . . .