This.
And just to give a personal perspective, I managed to avoid the M25 on one of the days because I heard about the disruption before hitting the motorway. Instead I did a 20 mile detour through 2 small towns, adding to the traffic pollution along with several hundred other cars, just as children were walking to school.
No one died, and I was able to phone ahead and shuffle my patient's appointments. But I added to the traffic pollution that day because of Cressida et al's actions. As someone who thinks we all need to do more to care for the planet, starting with our own personal actions, I'm a bit over being lectured thanks.