[jampekka]

Ethics are discussed very little in current philosophy, at least in the analytical tradition. Plato is mostly of historical interest, and of Kant's work it's mostly philosophy of mind, epistemology and metaphysics.

Logicians are somewhat different in studying formal systems, and there are strong links to (foundations of) mathematics. But logics are typically developed and analyze to study some otherwise philosophically motivated questions.

[quus]

This is not accurate. Ethics is very well-studied in analytic philosophy, and discussion of Plato and Kant are central topics.