I have more of a hassle with differ charging bricks vs the differ USB-C cords.
In my experience: If any device isn't charging fast enough or at all, it's almost always the charging brick, not the USB-C cable itself. And phone manufacturers don't even include charging bricks anymore. IMO, that's going to be more of a problem than what some are claiming USB-C cords will be.
As I stated in my previous post, the high majority of everyday USB-C cables that are being sold are going to be norm of 3.1. Anything higher than that is hitting thunderbolt 3/4 territory. They run cheap enough that it's not financially beneficial for manufacturers to keep producing 2.0 to 3.0. And anything for external display, the lightning cord couldn't do that anyways.