Why? That makes no sense. It's still possible to pick up on information when watching many videos at x2 speed (or x1.5 speed). All you're achieving by disabling such features is making your employees less productive.

Because we need people to pay attention and not fast forward through it. I'm not saying it's logical.

Not all companies are run by narcissists.

It's not even narcissism. I'd say it's good intentions combined with compartmentalization more often then not.