I find that a lot of companies that refer to themselves as being bearers of startup culture, is mostly trying to cater to younger people or at least a young min

I find that a lot of companies that refer to themselves as being bearers of startup culture, is mostly trying to cater to younger people or at least a young mindset - not because they're necessarily trying to hide insane working hours or demands. Sometimes it truly is about passion and keeping a "beginner's mind". Definitely not for everyone, but to me it feels very inspiring and empowering. (I work for 15+ year company that like to view itself as a startup - but the partying is definitely optional)