It seems to me that people using the wrong tool for the job just don't know any better.. Same for using an impact before 8:00 Am or after 10:00 pm...
It doesn't make them rude and it's not that big a deal. Educating them is the right thing to do. Criticizing them is rude!
I'm a big fan of demonstrating the error of their ways by educating them, using the nicest, least aggresive way possible.
I once had to demonstrate the error of our neighbors ways when they played loud music till after midnight. I had asked them nicely to turn it down, but the sound level ended up getting louder over time. The next morning it only took about 10 minutes of loud outdoor music at 6:00 Am for them to get the point.
It was much quieter after that.
I later explained/apologized to other nearby campers. They all appreciated my position saying they understood. It was a lot quieter for the rest of our stay...
Safe travels and all the best.