People who agree with the post also say things like "i don't hire people with certs" in IT. Which is a load of bull of course. They want to teach you their own

People who agree with the post also say things like "i don't hire people with certs" in IT. Which is a load of bull of course. They want to teach you their own way and disregard industry practices because they are the best. What I have learned is this also means they don't want someone who will disrupt or question the status quo. In infosec for example, I work or worked at a place with a lot of really smart people but they have been at the same company long and the idea of doing things in a layered defense strategy (not perimeter/firewall/ids centric) way is "the wrong way" to them even though that is best practice now. On the other end I keep running into people that have worked at startups like uber for a long time and their answer to threats is "use only macs" or "get everyone a yubikey". No shit? Lol You can't be experienced and not have some bad experience but managers and people in power disregarding experienced people's opinion's without applying critical thinking is laziness and incompetence. You need experienced people as well as people with little experience but who are motivated to learn on any good team. It's like a sports team lineup, you don't want everyone having the same skill and experience you want them to have what is right for the position they are playing.