We're all hustling to stay relevant because we're caught in a cutthroat game of musical chairs as our industry gets automated, and there's little incentive to polish anything before releasing since 90% of the time you'll just get ignored regardless, so you might as well see if your project/landing page hooks before burning a bunch of time.
I polish stuff before promoting because I'm averse to reputation damage, but every day that I see people not doing that and getting upvotes anyhow makes the practice harder to justify.