I have maybe a few dozen USB C devices all from dumb 5V/2A chargers to 20V/5A chargers. From USB 5GB to USB 40GB. Never once have I ever had issue with the cables and connectors. Only time I've had an issue was when I dropped my phone into the charging cable where it physically broke off.

Meanwhile I've had an iPhone for 4 years and the lightning connector broke in such a way I had to use hot glue to pull it out of the port.