I suppose that this comes from the game Jam concept, more like a party of developers working during the given time to see what they can achieve, and showing the result at the end.
I suppose that the idea of a comp is another different one, but hosting them at itch.io don’t help to clarify : )
As you will perhaps remember, I was asking you about not sending my first option game to ParserComp 2022 some days ago. I get a bit surprised with everybody telling me to send only finished work (a good idea, thanks to all) but I feel in the obligation of send alternative work, no matter if not too good or finished. I was under the Jams philosophy : )