the territory assumption is necessary for morality

I don't see how. Feel free to explicate.

Do you reccommend anything I should check out?

Sorry. I wish I could say "Popper", since he basically , but he argued against Bohr's instrumentalism on some grounds I don't fully understand. quote from Wikipedia:

my reply to instrumentalism consists in showing that there are profound differences between "pure" theories and technological computation rules, and that instrumentalism can give a perfect description of these rules but is quite unable to account for the difference between them and the theories.

Usually when I read a critique of instrumentalism, it is straw-manned first (I think of it as InSTRAWmentalism). I am quite well aware that this could be a problem with my, admittedly patchy, understanding of the issue, and am happy to change my mind when a good argument comes along.