If the law had been passed in 2015, they probably would have picked USB-C as the newly finalized, and increasingly adopted, standard. Micro had already started to show its flaws by that point. Also, it's not like everyone in the EU needs to buy a new charger overnight; plenty of people would have a while before their next replacement, and plenty of others would have already gotten some other peripheral with the new port.

I can buy that, but I also think that we're now much less likely to replace USB-C, even if the reasons to do so in the future are just as compelling as the reasons for migrating away from micro.

Actually, I think (but I'm no lawyer) that if the USB-IF wants to standardize a new connector, they'd want to call it USB-C v2.0.

The law seems to implicitly defer to them to define "USB-C". If the consortium wants a new standard they could either reuse the name, or wait 2.5 years on average for EU approval or rejection.