I am from F&B industry, so I know what you are talking about very well. Yes, waitress and waiters or service crews are trained to do this.

The best you can help the waiters and waitresses as well as other customers or guests, is by talking to the Restaurant Manager directly - to tell the managers to change the style of training.

Otherwise, the managers will only blame the waitress and waiters. The managers will not get the point of your concerns as well as the rest of the guests or customers who may feel the same way as you.

You may want to write a review online like across Google reviews on restaurants, too. But the focus is to let the manager know that they should change the way the waitress, waiters and service crews are trained or instructed.