No, warriors won't throw a fit. Warriors mitigate crushes by using Shield Block to push their combined dodge, parry and block over 102%.

This literally does not change anything at all. This is exactly what defense does now.

Warriors should stop complaining that Paladins and Druids are taking their jobs because raid bosses aren't causing Crushing Blows anymore, allowing other classes to take a Warrior's place.

Instead, they should start complaining that Blizzard has allowed them to become such a generic tanking class that absorbing some archaic, cumbersome, and random effect like Crushing Blows is one of their few strengths.

Having tanked a lot of pre-Kara as a Warrior and Kara as a Paladin, I have to say that Warriors are much more reliable in gaining and keeping huge amounts of threat (unlike a paladin who will often have to play conservatively with their Mana), but beyond that they lack any really exciting or interesting mechanics. Warrior tanking, at least to me, always felt like Pull, Sunder, Sunder, Revenge, Sunder, Sunder, with a few helpings of Shield Bash thrown in.

Warriors should be the first choice for tanking, not because they can deal with some vague mechanic like Crushing Blows, but because they possess abilities that make them so.

Being more interesting to play wouldn't hurt either. Especially when they have to compete with Death Knights in the near future

Swipe is not a tanking skill, hasn't been for a very long time. It has no threat modifier.

It is if you have 4/5 T6. Or your swipe hits for around 250+ noncrit.

While Paladins would certainly love the removal of crushing blows, making it easier to be a raid-worthy tank, warrior crushing blow mitigation is definitely not superior to that of a paladin's. While Holy Shield doesn't increase the chance to block by as much as Shield Block, it does so for more charges and a longer duration.

Fast hitting bosses eat through warriors' Shield Block all the time. It is extremely rare for the same to happen to an uncrushable tankadin.