She posted a comment on her social media focusing on this feedback as "criticism" that came from a sexist guy "of course". It was pretty easy to draw the line to the three panelists, one of whom was a guy. Ouch.
In a previous life, I'd worked in a awesome (female led!) product company. While I had no experience prior to this, I quickly realized that the product itself and its quality etc was almost irrelevant to success, the X and Y mentioned by the male panelist was unfortunately everything, which you'd only know if you were in the space itself. The female led company I worked for was bought out by a (male led) competitor, who then using much strong x and y skills - cleaned up. Company I worked for got basically nothing.
Fast forward - my friends business not doing so great, she asks me for feedback. I said nothing other than enthusiasm. Partly because I was really enthusiastic - she'd put her heart into this project. But her comment on social was in my mind - I had no desire to be next sexist guy "shooting down" an idea
She's out of the business I think mostly. Anyways, this parallels the take of the article.
Obviously you didn't post the feedback, but I wonder how this was phrased. If the feedback was "improve X and Y", I think I sympathize with the panelist. The feedback was solicited! If it was framed as "unlikely to succeed because inexperienced in X and Y" then I think that crossed a line from critical feedback to a somewhat demeaning comment, even if it was right.
Regardless of how it actually played out, there's a good lesson here that you should be mindful of how your communication is understood. It's not enough to be right, it's important to speak in a way that makes sure what you're conveying is delivered in a useful way.