It's due to the regenerative braking, which transmits more power via the wheels when decelerating. Most ICE cards don't have regenerative braking; hybrids tend to.
This doesn't make sense. Energy in the system is conserved. On an ICE car, brakes convert the energy to heat. On an EV, motors convert the energy to electricity. The tires experience the same net force.
EVs wear tires more quickly, in general, because they are very heavy and produce more torque (and drivers are more likely to request that torque, also).
I'd guess an ICE transmission provides some deceleration too. But right on, apples-to-apples you would need to compare a Tesla to a Mercedes or etc and not a Corolla. They are sold as a luxury/performance car.
Fundamental misunderstanding of physics. Slowing 2,500lbs from 60-0MPH in 4 seconds (for example) puts just as much wear on a tire if it's with friction brakes or with regenerative braking or engine braking.