This tool for finding bad USB-C cables
This tool for finding bad USB-C cables

hackaday.com
USB-C Cable Tester Is Compact And Affordable

cross-posted from: https://discuss.tchncs.de/post/9409104
EEVBlog also talked about this in a mailbag episode: https://www.youtube.com/watch?v=rEZQvSgdA2k&t=1839s
And they also have different cable versions available: https://caberqu.com/