This is a misconception. Tesla suggests charging LFP batteries to 100% due to the fact that LFP batteries have lower voltage - thus, for the approximation of range, it is vital to charge the battery to 100% more often (once a week if I remember correctly). Charging LFP batteries to 100% degrades the battery in the same way as other Li-ion battery chemistries. The cycle number is higher for LFP, though. Also, LFP batteries do not charge more quickly: standard-range Tesla vehicles (model Y and model 3) reach around 170 kW at peak - models X and S charge more quickly.

Before anyone complains about the shorter range, don't forget that LFP batteries charge faster, can be charged to 100% every time without damage and won't lose any range at all for 10+ years. It was even said that within three years of use, the higher range batteries had lost their range advantage and were losing miles to the standard range LFP batteries, which started with less range but keeps all of it long term.