I remember meeting the co-founders through Startup School back in 2017 and they were pretty genuine and enthusiastic about their product. I think they had just started development. I'm glad to hear Canny is doing well.
These types of articles are nice to read but maybe not for posting onto HN because it's a little fluffy and non-technical/non-quantitative as can be seen from the critical responses.
As a side note, I personally think it's difficult (but not impossible) to use social networks as a way to determine a company's culture. Everyone should be mindful that IG/Facebook captures only the moments someone wants to share.