The reason why the question about risks is asked is because one way you can tell a person with experience from a person without is that the person with experience can speak about risks in more detail than "shit happens." They can enumerate specific risks, make general predictions about which risks are more likely to hit them than others, and estimate the costs that would be incurred should such a hit happen. This indicates that the person has been around the block a few times and knows how to differentiate between large, real, business-killing risks and more theoretical ones.
The opposite approach is to make bold statements like "no matter what happens, I'm going to make and deliver high quality shirts" with an obligatory disclaimer like "small hiccups will happen" tacked on afterwards. This communicates that you're aware that risks exist, but not what exactly they are, or which ones are the most dangerous to your business. Which sends the message that you haven't been around the block a few times. To be frank, it sounds like amateur hour.
It doesn't surprise me that a potential backer would prefer the first type of response over the second. I would too.