Pros
High achieving (but friendly, collaborative) environment, great for driven professionals looking to uplevel their skills and career, flexible work schedule allows me to prioritize school pick ups and personal life, company wide summer and winter breaks every year plus "inner work" days off and volunteer days, career opportunities for advancement (at least in my dept.), You'll work with some of the most capable, driven, kind individuals. I've been here for 3+ years and have no intention to leave, I like the work I do and the team I work with.
Cons
High achieving, high performance culture isn't for everyone (clearly). If you're looking to coast, this is not the place for you. There are pockets in the org with bad managers or poor leaders, and I agree they should be weeded out ASAP because they're clearly bringing down the majority of the org which is filled with decent people who want to do the right thing and do good work. I wish they had a 401k match.