I don't understand the 'never gotten usb-C' part. Modern phones have more than enough space for two connectors. So usb-C next to a micro-B charging port is no problem.
After a while, almost all phone also have usb-C, most people like usb-C, so the industry can petition to replace micro-B with usb-C.
Are there any examples where the EU mandates legacy stuff that is no longer useful, but still has to be kept anyway?
Ports actually do take up valuable real estate inside a phone. There are downsides to making phones have two USB ports. More ports on the bottom means less space for the second speaker and microphone, and makes waterproofing more difficult. I don't think any manufacturer would actually do it outside devices designed for special use cases.
Is that really better though? Phones would have to be manufactured with an unused port - and if you want to use all the functionality you’d need to buy another cable (yet more e-waste)
Not that I have ‘the answer’ just that it’s a hard problem.
After a while, almost all phone also have usb-C, most people like usb-C, so the industry can petition to replace micro-B with usb-C.
Are there any examples where the EU mandates legacy stuff that is no longer useful, but still has to be kept anyway?