I used to work at HubSpot. The company isn't perfect, for instance the lack of diversity is a huge problem. Taken in isolation, there's nothing in the article that's wrong, but the overall picture he paints here is wildly inaccurate. HubSpot is full of incredibly intelligent and capable people, including some of the most talented engineers I've ever worked with. I had the opportunity to meet and speak with every executive during my time there, I've even been to Halligan's apartment. The fact that he managed to find something negative to say about Dave, one of the most genuine people I've ever met, tells me all I need to know- the reason Lyons didn't fit in at HubSpot has nothing to do with his age, it's because he's an asshole.