I don't believe worldviews in of themselves are destructive or constructive. They do nothing in of themselves until they are translated into action. Curiously, folks with similar worldviews can behave quite differently, as ideologies and actions don't have a one-to-one correspondence. Outcomes tend to involve both give and take, too - something is lost and gained in any exchange. Whether we call it constructive or destructive depends on a bit on how we like or dislike an outcome. Which in a roundabout way gets to what the central point was of that post... and that's how our judgements of others mostly reflect ourselves and our own values.
Sure, and both you and they are entitled to that opinion. Such opinions reflects far more on the person doing the judging than anything else. That was my point, really. When we judge other peoples and cultures in general, it reflects our values and our norms. Those are valuable insights, but I think it's important not to mistake our appraisal of a situation for the be-all and end-all of things. If you want to study and learn about something well, you have to set aside your ego and your values to approach the subject impartially. Put another way, you want to avoid ethnocentrism and personal bias... you study and observe without judging. That's the approach I was taught as an academic, at any rate.