Is it because the MPs are all going off on holiday?
When Theresa May resigned it took six weeks to get a replacement. This is going to to take two months, and the guy has actually broken the law, so you would think they'd get rid of him with a bit more urgency than they got rid of May.
Also, things are pretty critical rn - need to sort out the NI border so it's legal, lots of economic/social problems due to low wages, energy cap due to go up the week the new person is in which presumably no one will do anything about because no one will be in charge or making decisions at that point.
So why aren't they getting a shift on?