The issue with being unconventional, be it with putting or full swing, is that there's very little out there to fall back on as a troubleshooting resource, whereas there's obviously an abundance of conventional teachings that (although sometimes nuanced for certain individuals) still doesn't stray too far from traditional methodology norms.
Stack and tilt was the next big thing back in the early 2000's, but as simple as the method looked and sounded, it wasn't exactly an easy transition for a player who had little prior experience maintaining a majority of his weight over the ball during the backswing. The concept sounded brilliant... if a player struggles transferring his weight properly, which often leads to a variety of mis-hits, then why not take most of the weight shift completely out of the equation?! That concept might benefit a committed (flexible) weekend player, but not so much the type of elite player who'd already shown enough ball-striking proficiency to get to that level to begin with. Even at its most popular phase, there were roughly maybe a handful of players who switched to the technique, and with exception of Aaron Baddeley, Mike Weir and Charlie Wi - the remaining stack-and-tilters were not exactly well known. I don't know of any PGA Tour pro playing today who still utilizes the technique. Baddeley enjoyed some means of initial success with the switch early on, but his game took a serious nosedive not long after. Although Weir's eventual demise was primarily injury related, there was a lot of chatter about stack and tilt not doing his game any favors as well.
You can always point to a rare example here and there, like Furyk, Bubba, etc. but these players aren't paint-by-numbers guys. They learned their own techniques, perfected their own techniques, while still maintaining a fair degree of basic conventional mechanics. A teacher wouldn't teach their golf swings, but they'd never encourage either of those two players to conform to a more conventional method. Within certain parameters, how players deliver the club head into the ball is somewhat personal. What seldom changes, from one player to the next at that level, is the position/angle of the club head 6 inches before impact, the moment of truth, and 6 inches after impact.
