fully agree on the first part, it happens every time we have to judge another person's action, our experience will always be the reference.
on the second it depends.
we assume that judging the behavior of a fictional character is a pastime, a fun, but has no real value.
but the character is always the same regardless of the path. as an example: what Josy says to MC (in the case of a pact refused) after the prep party is "true" even if MC instead chases Maya and is true even if the pact is accepted: Josy believes that she can be happy with MC.
we already have very few elements to judge the characters, if then each choice creates a separate multiverse that cannot be traced back to the others then we might as well give up.