Brexit under Theresa May was a stopped-up mess. The government kept holding votes on the same plan, to no effect. She couldn’t go forward, and she couldn’t go back. Parliament’s attempts to take control of the process were equally ineffectual. The system was at an impasse.
To use a medical metaphor, the body politic was constipated.
Enter Boris Johnson, who is determined to deliver Brexit, come what may. It may be unconstitutional, and it’s certainly going to be ugly, but it’s going to happen.
To extend the metaphor, guess what’s about to hit the fan!