Commenting on Europe has gotten really lax the last year or so. People kinda will just say whatever pops into their head and it’s some drive-by claim that they haven’t thought about for a second past it popping into their head, presumably because it’s become normalized. (i.e. “but everyone knows Europe goes too far”)
Sometimes it self resolves - as you contributed here, yes, countries limit and interfere and fine other countries businesses, all the time!
I don’t know what yours means though. What electrics are made in the UK? How are they over engineered?
I think they mean the fact that UK plug sockets are earthed, and contain a mechanism that prevents you from shorting live and neutral with a bent fork, even though those safety mechanisms are rarely the last line of defence (hence "over-engineered"… you can probably tell that I disagree with that assessment).