Since anyone could travel to EU at any time and then the EU rules apply, either Apple must allow all their phones to follow the EU rules if user says they are in EU jurisdiction, or Apple should get a fine for non compliance.
That’s not how international laws and customs work. Besides, be careful what you wish for since if they’d follow that line of thought you’re in for a 20-25% tax plus an import fee for importing electronic devices from a different jurisdiction. (Also, the non-compliancy would be your doing as importer; not Apple’s.)
The current word on the street is iOS has a daemon that checks Wi-Fi, cell carrier, and GPS data to determine if the user's in the EEA or not, specifically so they can gate these profit-diminishing features to the minimum possible jurisdiction. Ergo, if you fly to the EU, you can install all this shit, and presumably it disables itself the moment you fly back to the US.
