True. But we have been here long enough to know that isn't the case in crypto, and the same unit of my bitcoin can be worth more/less and be treated differently compared to the same unit of your bitcoin. Cases like this are the perfect opportunity for centralized services to steal from their users under the pretext of fighting money laundering, crime, and other popular buzzwords. And they will succeed in it.

Imagine a retroactive application. You are getting a knock on your door. It's your neighbor saying, what the hell man, I trusted you. Why is my exchange account blocked and their agents are asking me who I am, where I got my bitcoin from, and what's my association with the coins you sold me two weeks ago? What have you gotten me into?

I have a vivid imagination, but these are all things that can happen.