At least for me, it's not about the wiki link. I'm here for the comments, the stories, anecdotes, related deep Diving links and general chit chat. If you view the link as "this is the control systems thread for today", all the upvoter make a lot more sense.

Why the hell not ?

I still learn a lot from wikipedia. Maybe it's not useful for those who are experts in every thing. I am not one of them.

I think you can post more or less whatever you want.

Whether it gets upvoted depends on a lot of things.

For example, I will upvote this submission, but not your comment.