I'm late to this discussion, but I just want to throw my (very light) weight behind what Richie3Jack has been saying here.
First off, there's no reason to make "not flipping" into the holy grail of the golf swing. We should all know there is no such thing as a single answer to the swing. And it's undoubtedly true that one can play really, really good golf with a timed flip. About 5 years ago I was playing off of 1.6 with a VERY flippy swing.
But what 3jack says is right: the problem with the flip isn't that you can't hit good shots with it. It's that it is MUCH harder to be consistent from day to day, especially if you aren't a pro and therefore can't practice and play every day. If I could do nothing but play golf, I'm sure I could play scratch golf with a flip. But if I'm only playing twice a week, and only during the warmer months, I want to be able to shoot 77 when I have a bad day, not 87 - and I can't do that if I'm flipping it. When you learn to hit the ball with your pivot and a FLW, the game gets a little bit easier. Misses go straighter and there are fewer really bad misses.
Here's a simpler way of looking at it. When I learned the game of golf in the mid-80s, there was a fundamental, oft-repeated mantra. The goal was to build a golf swing that would repeat, and especially one that would repeat under pressure. To me, other things being equal, building your swing to have a FLW gives you a much more repeatable swing than sticking with your flip.