That's the companies fault for interviewing you with a HR person. When I do the hiring for my teams I explicitly don't let non-technical people do more than the absolute most basic filtering (i.e this person can't spell for shit, this person doesn't have any experience etc).
In fact, I'd love to have some candidates come in and shit all over X language or Y library. It's a good sign as long as they stick to factual gripes and aren't just mindlessly ranting. People who don't care about doing the best possible job don't give a shit, they'll happily use whatever is popular on autopilot for years of their career.
All my interviewing has been for front-end so most of my interviewees are deeply entrenched in whatever the fad of the month cult is (Vue seems to be the June 2018 pick). I spend the second half of each interview begging them to give me some kind of discussion point, pros/cons of something, an opinion of their own, or literally anything other than the pseudo-marketing tripe on page 1 of their favourite library's documentation ("I love working with Typescript because it scales so well!" puke)
Sounds like your HR person didn't know what they were looking for ;)