A lot of people saying "USB-C cables aren't even compatible with each other!" (Nintendo switch etc.) Guess what: that's exactly the problem this regulation is intended to solve. Fake USB-C cables like Nintendo's that have the right shape but do not adhere to spec should gradually disappear along with lightning cables. The regulation actually says that cables can no longer be bundled with the devices themselves, so Nintendo would stop sending you that fake cable with your switch, and you would just buy a real one to work with all your devices.
Other people saying "what about innovation!?" That's fine. Let's say the USB consortium releases USB-D with input from Apple, Google, and many other stakeholders. The EU can set another deadline for newly released devices to adhere to the new version instead of the old one. The transition will involve a period of time where older devices are still on C and newer ones on D, which is totally compatible with the regulation and is necessary with or without regulation. It's ludicrous to think companies won't be able to "iterate": you would be crazy to go to market with any cable technology that isn't already very mature. Apple spent years designing lighting chargers because they knew that once they were released they'd be around for a long time (and they have been!)
Other people saying "what about innovation!?" That's fine. Let's say the USB consortium releases USB-D with input from Apple, Google, and many other stakeholders. The EU can set another deadline for newly released devices to adhere to the new version instead of the old one. The transition will involve a period of time where older devices are still on C and newer ones on D, which is totally compatible with the regulation and is necessary with or without regulation. It's ludicrous to think companies won't be able to "iterate": you would be crazy to go to market with any cable technology that isn't already very mature. Apple spent years designing lighting chargers because they knew that once they were released they'd be around for a long time (and they have been!)