The only people you're burning by choosing not to purchase DQ games are other DQ fans. It is not a crime to be ignorant, and his personal beliefs are of no matter. I get people want to give some kind of response to dickheadish behavior, but you look silly.
Tough shit. SE sticking with this guy isn't the community's problem, if they lose sales because of it it's on them.
His personal beliefs are "of matter" when he's massively donating to hate organizations. I've never purchased a DQ game new and never will as long as he's alive.