Typically Zwift. Some are bullied and Zwift responds by retaliating on all instead of taking on the bullies.
The Power-Ups are gasoline on the fire. They are by definition cheats and they are poison for free, happy & fair riding. They are benefiting the strongest and kill any kind of tactical approach to sprinting. Everyone has the helmet, everyone starts at the same moment and he who has the most power receives the biggest power-up and wins. Yes, that is how percentages work !
Zwift is causing all this mayhem by themselves. There is no vision, no ideas, no innovation, nothing.
The only thing Zwift has left is a head start on their competitors.