This is incorrect. The high power charge is 20 volts, below the safe threshold of ~50V set by such agencies as: OSHA, NFPA, ANSI, IEEE, UL, IEC and others.
The real difference is USB was a completely new technology with zero market penetration so growing pains were inevitable. USB-C should not have these growing pains as they should have learned from 20+ years of developing the standard.