The thing with Ink is, he does what he does not because he WANTS people to live in misery, he doesn't look at other's people pain and just, shruggs and call it a day, Ink isn't indifferent.
But they have a purpose, a thing that matters, and he cant just take away people's purpose just because he feels sad for them, THAT would be selfish. Ink knows more than others, he sees through the story itself, but its a shame others cant have this knowledge too, he wish they could.
And looking this through neurodivergent glasses hit different, you wish people could see what you see, sometimes because it's beautiful and it's a shame you see them stuck in their little boxes, and sometimes you feel like they are happier fitting inside that box, and maybe you would be too.