I haven't made this assumption. I have only confirmed that (most) philosophers are no longer capable of following the latest trends in physics. Strictly speakin

I haven't made this assumption. I have only confirmed that (most) philosophers are no longer capable of following the latest trends in physics. Strictly speaking that's an empirical hypothesis in need of further confirmation. But it doesn't seem implausible to imagine that most contemporary philosophers would fail a written test that examines whether they have the mathematical skills to understand string theory and other advanced contemporary physical theories to a degree that is sufficient for making valuable contributions. Regarding the assumption, you're not far off though. I'm willing to assume a way stronger claim (without proof): Everything that can be explained, can be explained using mathematical models. I have many reasons for accepting this claim, but I'm also sure that not all of my colleagues would agree with it.