Previously, I thought Prigozhin was more likely a Psyop, because no country in the world would allow someone to be close to military matters and run their mouth like that. Prighozin has made numerous clearly false statements in the past, along with many likely false statements.

Though actually calling for a march on Moscow is where such a thing is dangerous and unpredictable enough, that no (rational) PsyOp would ever take that kind of risk. Perhaps one might think "this is intended to get Ukraine to push their offensive," but you risk some random Russian soldier/officer/security making an assassination attempt on a Russian official because they believe Prighozin.

I suppose there are a couple times in my life where I've come across people like Prighozin, who initially seem cool, but then get triggered by small things, you try to de-escalate, but nothing ever works, and eventually they just go absolutely bonkers.

Friendly fire incidents do happen in war quite frequently, though it would surprise me if this "incident" didn't occur at all.