I think the reason is that people are unable to answer these questions -- it's the type of question that can only easily be answered by an outsider, or by somebody two years after their startup idea didn't work. So while the questions themselves may be very good -- perhaps as a way to help your friends -- asking them to yourself doesn't seem very worthwhile.
Especially troubling was the one about loving what you're doing. The more infatuated you are with some idea of yours, the worse off you are. A better question might be whether or not you can stick it out for the years necessary for things to happen. Yes, if you love something that's all great, but reality distortion fields are not so fun to live in when the world is tremendously apathetic to your cause. A character that can work hard and pivot on something they logically feel might work is much more desired, in my opinion, than simple "love what you do". My dog loves fetching sticks. It really doesn't add that much value.
Having said that, you should love the value you provide -- the part about people wanting what you make. But that's just being a good person.
I don't know. I'm sorry to be so critical. The article just didn't sit well with me.
I'm sticking with "Make something people want that scales easily." I can derive questions from that starting point.