I think it would increasingly create problems with EU legislation not to have USB port on telephone
Well, sort of. The goal was to get rid of the umpteen different standards for phone chargers, so you wouldn't end with all the obsolete ones going to landfill or polluting recyclers - the goal being able to change any mobile phone with any charger; and have that roll over onto other small devices via halo effect, though current requirements mean tablets et al aren't actually part of the standard per se.
They do have to provide microusb as an option for phone chargers, as the vast majority of devices currently use that. If the device the changer comes with has microusb, they can provide a hard-wired microusb charger. Alternatively, and this is what pretty much everyone does, they can provide a charger with a USB-A female socket, and a standard A -> microusb cable. Either is called a common External Power Supply.
If the device uses an alternative standard, i.e. lightning or type-c, then they still need to ship a common EPS, and make available an adapter for use with microUSB. The usual method of course, and the one apple follows, is to ship a power supply with a USB-A plug, and the USB-lightning adapter. Once phones turn up with type-c connectors (if they haven't already?) in the EU, they will likely do the same. As long as they ALSO make available (it doesn't have to be 'in box') an adapter for the device to use hard-wired microUSB adapters, then they're complying.
So now, any microUSB device can be charged from any mobile phone charger, including apple (though obviously not necessarily at max speed). Any non microUSB device can also be charged from other makers chargers, either by using a type A -> lightning/type C cable, or a microUSB adapter on the phone itself if the charger is the rare hard-wired type.
Long term, the regulations will no doubt be updated once microUSB devices go on the wane, and type-c provision will become the norm. But since almost all chargers use the USB A option, swapping out the cable is simple without needing to replace -and bin - the entire charger.