I wouldn't say it's pointless. It's not something you can pick up in a few weeks though. Not sure if it's something you can get from a book either. Listening to a few thousand hours of jazz would seem to be in order. The great rock drummers who were raised on jazz in their formative years, Mitch Mitchell and Ginger Baker for instance...those guys were steeped in jazz first.... and were good at it....before they played rock. And the jazz influence came through beautifully in their rock playing.
Now if you are a rock player first trying to learn jazz to further your rock drumming...I don't know if it's the same, at least in the beginning. You probably still think like a rock player. Not saying that's good or bad, and it's also just a guess, but for jazz to come through, I think you would have to have at least an elementary jazz vocabulary in place. Totally the opinion of me, a non jazz player.
The guys who can incorporate the jazz frame of mind into rock drumming, IMO are more musical drummers than your straight rock drummer, generally speaking.