I’m unhappy that they’re allowed to spy on parliamentarians at all. Leaving aside the “exempting themselves” bit for a moment, I would much rather that a Prime Minister didn’t have the ability to deploy the awesome power of the surveillance state to ratfuck the democratic opposition. Because that’s been a thing in some countries at some times, and it sucks.
Of course, I’d much rather that the Prime Minister didn’t have the ability to deploy the awesome power of the surveillance state to do anything, but I think holding this up as an example of the establishment protecting their own is a little historically optimistic.