I have met plenty of very skilled Thoughtworkers. However the consulting model doesn't reward doing things right. It rewards things like selling the "A team", then swapping them out as you sell the next big client. And shortcuts that enable payment milestones, etc. They have zero incentive for what code does, how maintainable it is, etc, after they leave.
TW can deliver well, but you have to manage them closely.
TW can deliver well, but you have to manage them closely.