There's no appearing to take the p*ss, it's axiomatic that they do.
You can rest assured that, whatever apparent revisions they come up with in response to this latest attack on their gravy train, that hidden in the details will be sufficient clauses to ensure that they are as well off, if not better off, than they were.
That's how they work: they are delusional, seeing themselves as somehow being greater than mere mortals. There is the odd exception within the 650 of them, but honest upright ones who see their position as being one of public service and not for personal gain are very much in the minority.
And you just know that, for all their self-righteous chest-puffing, the Whigs or Tories would be just the same if they were in office.
Corruption is endemic in the Palace of Westminster. Always has been; always will be.