Mayr worked tirelessly to establish a synthesis bearing the unmistakable stamp of positivism.
Most of us think of science as the enterprise of seeking truth by formulating hypotheses and testing them against the evidence. This is empirical science.
Evolutionary theory fails to explain what almost all biology students are told it explains: the origin and diversity of life.
This is a clear falsification of an evolutionary expectation expressed across many years, and widely held by a consensus of experts.
If one insists on and is committed to naturalism, then naturalistic, evolutionary, explanations are what you will find.