It is known that…
It is known that supercharging a battery will cause damage to the battery capacity. Whether it's a cell phone or EV it's the same thing. Forcing the battery to charge at a high rate will shorten it's life.
Tesla knows this as well, but they offer these fast chargers so that the vehicles can compete with normal vehicles and the charge times are closer to the time it takes to fill a fuel tank.
Couriusly, if a Tesla battery fails while under warranty Tesla has the ability to pull charge data and see how many times the battery was fast charged and the intervals between charging as well. Tesla has and will continue to use this data to decline coverage. Even though they provide the superchargers for the purpose of fast charging, the "over use" is considered abuse and voids the battery warranty. And they likely do not even have to physically connect to your vehicle. Tesla is always pulling your data and can read it over the air.