Yes, I do know this and OVA2 are original material (non-manga canon). However, from those things, why do I have the thought of Jean actually being the bullied rather than the one doing the bullying when he was younger? Maybe it’s not a surprise given how we are shown his insecurity since the Trost arc.
I think each spinoff’s character personality is a bit different. From the look of the past few chapters, the spoof version of Jean is far from the naysayers version of Jean; and probably far from the myth of “everyone in-universe hate Jean”. Although the author of spoof would probably be someone who’ve actually paid attention to the manga (i.e. the development of characters) and therefore have Jean be more similar to the current manga version’s.