The amount of hierarchy and peer review is extensive and apprenticeship was core to my experience in multiple consultancies. One might say post-covid, in a pro-hybrid world, this has been hard. Still, as a new hire couldn't introduce myself to a group of clients without sharing my intro with the associate partner first and getting notes on my literal 3 sentence bio and then feedback afterwards. Every deck I've ever presented has been through multiple hands above and below me in the hierarchy. That 22 year old usually if not always has had a discussion, notes, notes reviewed, questions listed that need answers etc.