I don't often rate dramas a 9 or 10, and this was an easy 9.5/10 for me. Just say your brain couldn't comprehend…
OK but I still don't understand what the problem is? this is a personal rating site, everyone has the right to rate as they see fit. despite the "unfair" ratings, there is strong mainstream taste + percentages and number of watchers, all these things influence the overall score and ranking. so yes, the popular opinion within this kdramas niche is valid.