I agree with your point about not getting worked up about it but not buying games doesn't seem to do anything. Nobody bought Death of the Outsider, it had even lower sales than Dishonored 2 which itself was considered a flop. It was so poorly received that Dishonored has now been shelved as a franchise. Arkane previously worked with MachineGames on a tongue-in-cheek co-op open world shooter (Youngblood) which was another commercial flop and universally hated by fans.
Despite all that, Arkane's next project is a tongue-in-cheek co-op open world shooter, with a story by the lead writer of DotO. Voting with your wallet doesn't seem to do much.