As LH pointed out, he was just throwing the 90% number out based on his perception. Even if he is right on the money, there are still 10% that don't. And of the 90% that do get divorced, there are some that R after D. Joe2017 is a perfect example. His sitch would be included in that 90% figure and now, only a year later, his wife is begging him to R.
M: 34 W:34 D:7 D:6 S:3
M: 9.5 years T: 12
OM found & BD (by me): 9/19/18 IHS begins W informs me she's moving out: 11/28/18 W files: 12/21/18 D Final: 2/25/19
