I typically try avoid giving money to creators I would personally consider scum if I knew them personally.
In some cases this is not feasible and I just live with it. Amazon is a dogshit company but also the only source to buy a lot of stuff where I live right now due to Covid lockdowns, as an example.
In this case if I'd known before I'd have bought the stuff used to skirt giving Sadamoto a penny and it'd have been pretty easy, hence the frustration. As for why this issue bothers me so much the tl;dr with minimal blogging is I sympathize with what Koreans went through with Japan to my own country's history.