Interesting considering I have also inspected nearly 5,000+ homes as a Home Inspector and countless numbers as a municipal inspector and have never run into the problem. You simply can't fix stupid and the things people do which I see on a daily basis. However, I am not concerned about a piece of MC Cable touching a water pipe.....but alas thats only my opinion and if it is as simple as the electrician moving it out of the way in order to make them feel better....go for it.
Now....if the issue is BX and someone THINKS it's MC then we could have a problem in older homes because MC is not BX and the issues of improper use of the outer jacket of BX is wide spread and is a different issue...The original OP was in my opinion refering to new MC in a new installation.........BX is very different than MC of today.