Game theory is based upon rational thought, there's nothing rational about taking a punter over the greatest player of all time.
There are just some more important positions, even if Ray Guy DID hit a camera in the Superdome.
No biggie when we traded Vinatieri, although there was wailing and gnashing of teeth. Some people think he's super super special because of his clutchiness. I dunno, the Clots also thought the liquored up kicker Vanderjackoff was special. And I am sure that there are fans of roaming tribes of Zendejases and Grammaticae. I'm sorry, they're not special either. It's good to have a good kicker, it's bad not to have one, but they can only be so good because they're only so important.
In fact, a punter is more important in direct proportion to the amount of time you spend in your own end of the field on offense. Having a great QB allows you to do surgery. Having a great punter allows you to cauterize the wound you cause because you botch every operation.
Before anybody says it, a great defense isn't in the same category. A great defense intercepts you and strips you and beats your guys up and changes the game. A great punter? Well, he might make it harder for the superior team to run up the score on you -- and you're playing a superior team, if you're punting a lot.
Just happening to have one onboard is great. And hey, better to have a good one than a bad one. But there's a reason there's no punter in the standard fantasy football format.
It's like a kicker, but moreso.
GOAT Punter is like I dunno, "Guy who took the most shots to the face from Mike Tyson and stayed on his feet the longest."
Now that is sort of the plot of half the Rocky movies, but if you're looking for an all time "winningest" team, I just don't know how you measure the "impact" of the punter.