May I throw one in too?
As I agree that many pilots clog the frequency by irrelevant calls, I think the controllers blog the frequency by putting pressure on us to make their plan work. When I (we) get our line up clearance we will be ready. It is completely useless to tell us to be ready for an immediate. It doesn't change anything to my take off.
And worse, telling me to take the 1st exit just after I touched down and still run with more than a hundred knots over the runway, checking our spoiler deployment and deceleration. Again, we know we need to get off the runway, but don't put pressure on us because you decided to line up a big airplane in a gap that really is too small.
I know you need to make your targets of runway movements per hour but if it doesn't fit, it doesn't fit. If in doubt just don't line them up, you may make a very inexperienced FO very nervous who will slam the brakes, making all the pax hitting the seat in front of them, only to realize the first exit is not doable and then having to roll low speed to the next.
Rant over.