I'm sorry, but that is largely a load of crap.
I have had to attend a great many meetings in my day that were entirely irrelevant to me, my job, etc. There was no reason for me to be there, other than the fact that a manager wanted me to physically be there.
Now, you can argue that I should not have to attend useless meetings, but the older generation is stuck on them and so we have little choice. That is not to say that no meetings have merit, of course.
Being able to sit quietly in an irrelevant meeting isn't actually a particularly useful skill in the rest of life, so I can hardly blame anyone for wanting something to do or some other distraction during them.
You may consider it impolite or disrespectful. I consider it disrespectful to make me waste an hour of my time because you feel the need to show your self-importance by calling unnecessary meetings and forcing people who have no need to go to them to be there.