They ended up making a barely acceptable offer because despite my horrible faux pas, I was a domain expert and they couldn’t keep staff for more than a year. And I accepted because I was 1 month away from being bankrupt and homeless. Lasted a year and a half. The business turned out to be solid but I left for greener pastures.
I have no idea why owners are so cagey about the health of their businesses and funding sources, to potential employees. Especially when things are basically fine! He was bootstrapped and evidently had fine cash flow. Why is this a faux pas to ask? HN is full of entrepreneurs: why are you so offended when a candidate asks about cash flow or to see the cap table?