How much debate about this stuff still happens, outside of academics who need to publish or perish? From a quick check the only papers being published on this stuff are all variants of "if we add another variable <X> to some model we can conclude the difference in tax incidence is <Y>" where Y is some minor variant of pre-existing beliefs that may or may not hold in reality. Outside of that there are occasional flareups caused by old-guard left wing politicians or activists getting into fights about it with economists, and not much else.

A lot of the debate on this topic is tedious anyway because it revolves around semantic distinctions that only exist in specific kinds of ideological discourse.