Hi, I am the initiator of the jam’s idea. Just some disclaimers: I am NOT in the SKG organization, I am just a community member. I created the Stop Killing Games itch account and the jam under that account, to direct attention to SKG movement.
Still, AFAIK there is no one else interested in conducting such a jam, and I think the idea is neat. So I think it’s “legit” in that sense:D