The post is by an AMD employee, and the “insightful” button is not to say that you learned anything from this necessarily. Just that the post is, well, insightful. In this case, they see that he’s an employee who made a post sharing knowledge about something and are using it to show support. They’re basically using the company account to back him up by confirming he knows what he’s talking about. Like you do when you confirm peoples skills etc.

I don’t know about car companies specifically, because I’m in IT, but 99% of my feed is programmers sharing basic programming stuff that is liked by other programmers who obviously already know, or power users sharing OS specific tricks that everyone else who liked definitely also already knew. That, and invitations to seminars on cyber security. It’s like a big ego stroking fest where the only way to make your presence known is to make posts like these, so everyone else who knows the same stuff you do can look at it, stroke their beards and say “hmmm, quite, yes, yes” in a very sophisticated manner.

Insightful doesn’t mean you learned something from it. If you say something is insightful it means… It’s definition really “having or showing an accurate and deep understanding; perceptive.” You can understand something and still say it’s insightful.