I don't know if I would go that far. Need to be educated? Sure. Banning them just because they don't react, in the heat of the moment, they way that a simple majority of people think they should? Not sure that is warranted.
Why do coaches try 'dirty' plays - because they can get away with it most/all of the time. If they are getting away with it most of the time, then that means that most officials didn't see it the way 'we' do. So, banning every official that was ever part of a dirty play (and also sending a threatening message to all potential officials out there), in itself might end youth sports right there.
Again, probably need to educate these officials - maybe 'demote' them to lesser games. But banning them wouldn't fix the situation. The coach on the other hand...
I admit I'm making a lot of assumptions about the umpires who repeatedly let this stuff go, but I look at it this way: Them not doing their job puts children at risk of injury. That's enough to keep them from umping games.
The posts say this team does this routinely, so I'm thinking umpires are seeing them do it over and over and never do anything about it. I'm not talking about an umpire seeing it for the first time and not being sure.