As a former Toptal employee: IMHO the co-founder in question was widely regarded as a horrible manager, often pushing people to burnout and generally imposing a culture of secrecy and mistrust. The VPs they ousted were nothing better. I personally went through several burnouts while there, but also that was a springboard to a much better career afterwards. Yes, we've put in 9/9/6 for years in the founding years, but we were also compensated quite generously.