Sadiq Khan is an arrogant twonk but he's not responsible for the current shitshow. Put your blame on Central Government. (Sean Bailey is the Tory candidate and he has not a clue about Transport).
Anyway, as someone who works with the London public daily, I can tell you my fellow residents are tired, bored, probably furloughed or recently made redundant, probably facing a bit of anxiety and depression, and cannot be arsed to comply anymore. They are DONE.
Further point, I was on a bus today on the lower deck in my uniform and even though the upper deck was empty someone sat right next to me. I had to ask him several times to move away so that I could get past and move upstairs. It's obvious that I'm more likely to catch the virus, or carry it asymptomatically, because my coat was covered in TfL roundels. But he really did not care.