There's a term that coaches in sports are familiar with - it's called "fake hustle".
What's fake hustle in sports? Fake hustle is when an athlete shows incredible effort, but only does it when the play in question has already been decided. It generally has no impact on the play, and due to the theatrics involved, may hinder the team the athlete is playing for by causing others to do additional work.
Example - Loose ball in basketball, and an opposing player has an obvious angle to the ball that's going to result in him gaining possession 99.9% of the time. The fake hustle guy never misses this opportunity to dive on the ground or run by the opponent, often after he already has the ball.
To the naked eye, it look like great effort. To the trained eye, it just took fake hustle guy out of the play, and the team is less prepared to defend as a result.
Fake hustle guy sucks.
What's the equivalent of fake hustle guy in corporate America? It's the guy that comes in with lots of email comments after hours of work has already been completed. He could have been part of that work, but instead, he'll ask the "big questions" to peers (not subordinates) in a public forum once the work is done.
To the untrained eye, it looks like he's value added. The the trained managerial eye, it's fake hustle or fake smarts. Don't take 10 minutes to lob stuff over the wall and try to be a hero. Do the work, be part of the team.
Fake hustle guy sucks in corporate America as well. Hit me with your example of fake hustle guy at your company in the comments.