It adds insult to injury, since it shows that they expect that some people will want to apply those filters, but then they don’t care enough to make the filters work. They just waste even more of my time by creating the false impression that they have made a tool that does what I want.
I understand that the buyer doesn’t lose the de facto ability to install the game from a local copy of the installer, but is it possible to lose the de jure right to install the game in that way due to licensing issues on GOG’s end? I’m not saying it is, I’m just curious.