I think the parent really meant publishable where he said finished. Some kind of minimum viable product. That's what shows you can cut through the BS and wishlist and fun-to-code stuff in favor of the details and grind of getting something out the door and functioning to serve an audience.
`publish` vs `finish` I think is a good clarification of what I think the commenter meant.
Going further though, I do think I prefer `published` to `publishable`. Fighting through the last (sometimes most difficult steps) to get something in the public means a lot to me.
Additionally, it's also easier to demo something that's available on the public web.