Hey, you can judge something without using it in some degree in my opinion. I’ve judged iOS and macOS because of their user experience, design and etc based on things I’ve seen and knew. But I didn’t want to spent a fortune just to express my thoughts and end up with something that I don’t like. Now that I’ve used them I hate on them even more. But in this example it seems that this person don’t have enough knowledge about this specific thing and don’t know what they’re talking about.