The thing is though, you're just as likely to be not improving things.

I think we can realize another reason to just ship it. Startups need to be always moving. You need to keep turning the wheel to help keep everyone busy and keep them from fretting about your slow growth or high churn metrics. Startups need lots of fighting spirit. So it's still probably better to ship it rather than admit defeat and suffer bad vibes.

Allow me to rephrase what I think you’re saying:

Startups need to ship because they need to have a habit of moving constantly to survive. Stasis is death for a startup.