As an aside, it looks like this was created by one person, which shows an amazing level of talents in design, UX, programming, marketing, and presumably devops. Kind of scary.
Depends on the unicorn. Some can spin up the full stack, put it under source control, wrap a CI/CD pipeline around it, and have it deployed to a TLS-encrypted public website in under an hour.
I think you can actually find the above level of developer - what many would classify a 'unicorn' - in approximately 1-2% of the workforce.
That doesn't mean they understand your business or products, know how to work well with other individuals, etc. There are a lot of other factors beyond just the productivity angle.
Now, the above developer also with the ability to fundamentally understand the business, as well as interact with all of the key people while performing said productivity stunts on a consistent basis... I think you are getting into the .1-.01% range.
If it's just "hello world" in this day and age of good frameworks, great open source tooling like Terraform and SaaS offerings that's not too tall of an order.
It looks like they are leveraging Netlify for their website, Gumroad for payments, and Notion for wiki. This helps to make as much of what is not actually the product (marketing, documentation, financials) as easy and fast as possible. Most of that hour would be actually making the product (the web extension).
Given a talent for design, and some marketing, and some experience making extensions. This should be possible within a reasonable time frame.
Through practice and experience you can reduce the amount of time it takes to make routine actions and decisions. But the bottleneck is making good decisions about matters that are not routine, and every new project has plenty of those.
I suspect the "scary" comment may not have been understood because of ESL, perhaps. So I think the person who asked if it was a good thing wasn't being sarcastic.
