If you have smart employees respectful of other's time it shouldn't be a problem. I would tend to agree with Musk on this one. Processes are often put in place to counteract poor hiring. If you need inefficiency raising processes to defend your business from your own employees, maybe you don't have the right employees.
The problem is if 12 teams all are independently interested in talking to a specific person. Even if that could be condensed in a few meetings organizing it should not fall on the unlucky employee of interest.
Handling these complexities of scale are exactly what managers are for.
True, but what you're describing is the exception and not the norm. If it is the norm then the issue is that management has failed to hire enough technical documentation writers.
