Yes, the questions are targeted to a specific type of startup, although not necessarily one with huge funding.
But the questions don't change drastically in other types of startup either. Maybe some of the financials do, but questions about founders, business fundamentals, metrics that are focused on, how employees are assessed, etc. remain true regardless of whether it's a funded startup, bootstrapped, revenue generating, profitable or otherwise.
Most of the things you mentioned remain true for any prospective employer, though, whether it's any form of start-up or already established. Only the financial questions from the original set were particularly start-up specific, and those are the ones where I see a bias in the article, because a different approach would be appropriate depending on the nature of the start-up.
But the questions don't change drastically in other types of startup either. Maybe some of the financials do, but questions about founders, business fundamentals, metrics that are focused on, how employees are assessed, etc. remain true regardless of whether it's a funded startup, bootstrapped, revenue generating, profitable or otherwise.