Charging at high amp and voltage is not black magic. Tesla charging systems still have to follow the rules of physics which means some energy will be converted to heat when charging. Charging at 70+Amp likely generate more than twice the heat compared to charging at 40A. The additional heat will have to be dissipated with the same heatsink, so what gives? The fan has to speed up significantly in order to displace enough air to cool the battery to optimal charging temp.
Think of it this way, if the fan isn't working that hard, your battery probably won't last half as long if you charged at those high amperage.
I only have a NEMA 14-50 plug, so I can't say if the newer models are quieter or the same with high amperage charging, but I doubt it really improved that much if at all. Charging at 17KW per hour will generate tons of heat regardless.