When they said Reddit has 2000 employees I was shocked. what could they possibly do onto a website that is basically run by users (and sysadmins) and that is basically feature-wise mature? I really can’t figure out 2000 people working every day on Reddit… on what? just for a quick comparison, the whole IAmA was run by a single person (Victoria), so… what are they doing?
A lot of IT companies do that, they probably write a lot of documentation and hold meetings and do studies and quality checks. One person could skip all those steps but might be harder for another developer to continue their work depends though.