Well, yes and no. In large organizations, with complex things that can cause a lot of problems quickly, you do often need to have a few people like this. They are, hopefully, not anyone's boss, but they may be, for example, the DBA in an organization where everyone is hitting the same database and if it gets hung up everything in the company grinds to a halt. The "grizzled veteran", aka grizzly bear.
The usual result is that if someone finds out they have to do something that involves asking the grizzly bear a question, they make sure to do lots of due diligence first, and maybe ask other people who might know the answer, and only bother the grizzly bear if they absolutely have to.
You definitely don't want to have an organization with lots of grizzly bears, but it is also the case that a particularly high-stakes system sometimes does need a grizzly bear paying attention to it, to keep that system from giving everyone a great "learning opportunity" on a regular basis. If that's a less high-stakes system, then that learning opportunity is fine, but if it's something that nearly everyone relies on in a large organization, you cannot afford that many outages.
Not saying you're wrong in your evaluation, just saying that the same personality type is occasionally useful, or even necessary, in certain situations.