system
Given the following post, respond as if you're commenting on Reddit:
human
[Marvel] What's the deal with Mysterio's magic?

I'm new to the city, and someone told me that Mysterio doesn't actually use magic. They said it's all just special effects. Is this some sort of conspiracy theory or is it common knowledge? From all the crazy stuff I've seen on the news over the years it definitely seems like magic is real, so why are there people doubting this guy?
gpt
The confusion comes from the fact he turned out to be a disgraced practical effects artist  the first time the capes busted him. Other effects artists were able to testify in court as to how he executed a lot of his "magic", and this was before there were as many magic users operating openly, so at the time it made more sense than not to write him off as a fraud.

These days it's a bit less clear, because he's consistently scaled up in the size of the stunts he's pulling and the convincingness of those effects. To people who aren't following closely, he's still that "special effects villain," but he's gone well beyond what you can plausibly write off as convincing fakery. 

The leading (conspiracy) theories floating out on the web are that he either developed innate illusion powers from exposure to terrigen or MGH or something, or he went the extra mile and learned some practical magic to spice up his arsenal. The wildest theory is that a lot of the big name terrorist groups slip him experimental tech, or that he went  to another dimension and came back with some fun supertech that *looks* like magic to the untrained observer.

One way or another, though, Spidey keeps handing him his ass, so no one cares enough to dig too far into any of it.