What exactly would they be upset about to protest at la Vuelta? The organizers appear to have put together a fairly solid bubble. They did a huge marketing campaign to keep people home instead of on the side of the road. They banned fans from the mountains. I haven't heard any complaints about excessive transfer times combined with insanely long stages. The weather has been better than the riders expected. La Vuelta typically does shorter stages anyway.
The teams are on record stating that the Vuelta bubble is the strongest of the three grand tours.