A lot of very cheap chinese made stuff still uses micro-usb for charging, technically I imagine that stuff is illegal in the EU, though I doubt it's that well enforced.
What the Chinese do with cheap products sold on AliExpress isn't important. Obliging big manufacturers to adopt common standards reduces environmental waste and helps cut down on gratuitous exploitation of consumers.
You can find plenty of 2nd hand devices for sale with non-USB-C connectors and no, the police, aren't arresting people for selling them, nor is their sale illegal.