Why not? I was under the impression that we already did have a big discussion about that where I was pressed on the reasoning. The short answer ended up being something to do with finding the value of escapism/immersion/player freedom/scale somewhat superficial, which open world games tend to lean into as the main draw (that sandbox appeal), and feeling that the antithesis of that-- meaningful constraints/restrictions/focus on author curation a big part of what makes game design elegant, intimate and personal (I've heard Disco Elysium described as technically an open world in definition but not open world in purpose/appeal, and that's one of my favorite games). I don't recall coming across as sensitive to that question, and if someone's unaware of that reasoning (or just unsatisfied with the logic), I don't think I can blame them for wondering "doesn't that seem narrowminded?", as far as they can tell (I don't think I asserted it as a certain claim, just a tentative impression). Did I end the discussion on "it is what it is, leave me alone" or something? I honestly don't remember-- I think I recall wanting to explain my feelings as best as I could and make sense of it.
If you're uncomfortable with digging deeper into the subject (or just find it tedious), that's fine, we can drop it, I just don't grasp it well enough to be able to honestly appreciate the different perspective and have a different impression on it. Why would the designation of "this is a game, which should be like this" or "this is a movie, which should be like that" matter enough to result in a different opinion on two potentially identical experiences? Without knowing more, it seems very arbitrary to me (like "these are just the rules/boundaries and I have a distaste for them being broken"). Do you feel the same way about genres, like "this is what I expect from this genre vs. that genre and I only like it when things stay in those boundaries, because that's what they're best at"? Even if it is just a personal preference thing and nothing more, I wonder where that preference comes from.