Parliament

Yes, it's contempt. It says to me that from their point of view the hard work isn't necessary. Dave could be an MP if he wants, and if constituents will have him† he doesn't want, so he isn't an MP, well too bad. But they made him foreign secretary anyway, because they had no better candidates. Miserable, just accept that you can't govern the country with what's left of your party and make way for somebody who can.

† In practice you would parachute him into a safety Tory seat, my grandmother's old place would work, one of the safest seats in the whole country, A rotting corpse with the Conservative logo would handily win if it was allowed to stand. But that would be an imposition on poor Dave's time. Local party might even insist on meeting him. Tedious.