I'd assume that theoretical math prides itself in trying to be as close to pure logic as it gets. It has very little, if any empirical elements (at least that's what it looks like to me). And I understand the value in trying to preserve that pure logic element. In the end, biology is just chemistry, chemistry is just physics, and physics is just math. If you feel like your profession is the bedrock of all other science, it probably feels weird to shake its theoretical foundation.