> I can just hope that the EU is successful in stopping all of Apple's trickeries ranging from 2.5mm headset jacks, ports, OS slow downs, mysterious battery underperformance
2.5mm jacks exist but iOS devices have never used them. I think some feature phones did that back in the day.
Personally I've only encountered them on a pair of headphones where they're a step up from a soldered on cable, but more annoying than a standard jack would be. It's also recessed really far in with a very narrow twist-lock connector, so isn't compatible with any cables except the special one it comes with.