grammaticality - Is this compound sentence grammatically correct?

That is a very "artistic" response, clearly not the most formal way of explaining yourself in normal situation.

It's questionable whether some of those me shouldn't be myself instead. I believe they should, but since as I said before it's rather a "piece of art" than "a piece of grammar," you can't really call it "improper."

All in all, I see nothing really wrong with the sentence and see it as correct, at least the syntax works and I can parse it without any trouble.

One thing that I'd change personally is that I'd start with:

So they figured that since I’m a real ...

I'm not saying the original is wrong, but I find it ambiguous or at least difficult to parse without that.