The bulk of EASA regs are FARs, copied/pasted, usually (not always) with the paragraphs renumbered
And if they
all were, you wouldn't be so pissed off, would you?
It's not about them all having to be different, it's about having control.
Clearly, I'm not going to convince you of the rationale behind the need for EU aviation regulation. So you'll just have to continue believing that it's all the fault of corrupt and stupid EU politicians, many of whom have a personal vendetta against you. Good luck if you're right.