The mere fact he was a fighter makes Kenflo better than Rogan and Goldy. He has said some dumb things, but on the whole he just commentates the actual fight as it is actually happening while giving insight as to what the fighters are trying to achieve and why.
In such a dynamic and complex sport which is yet to be globally accepted, this is exactly the type of commentary we need and personally I think only ex-fighters should commentate. There are several available now the sport has been around a while, their insight fascinating and educational and, most importantly, accurate.
With every UFC event I find Rogan and Goldy more bland and not improving technically, they are the voices of the UFC but I wouldn't think twice about replacing them with fighters. Go Kenflo.