OK but your original comment reads like you’re offering things not mattering cosmically as a reason for thinking MWI doesn’t change anything (if that’s not a reason, then you haven’t given any reason, you’ve just stated your view). And I think that’s a good argument—if you have general reasons that are independent of specific physics to think nothing matters (cosmically), then it will follow that nothing matters in MWI as well. I was responding to that argument.
OK but your original comment reads like you’re offering things not mattering cosmically as a reason for thinking MWI doesn’t change anything (if that’s not a reason, then you haven’t given any reason, you’ve just stated your view). And I think that’s a good argument—if you have general reasons that are independent of specific physics to think nothing matters (cosmically), then it will follow that nothing matters in MWI as well. I was responding to that argument.