Framerate drops are apparent in most of the highest rated games of all time starting from the PS1/N64 era and on. Apparently plenty of people can't even tell when the framerate drops, so it never detracts from their experience. Personally, I find it impossible to believe that anyone completed BotW and only encountered framerate drops 2-3 times as people often state. The framerate drops, a lot. But if people don't notice it, it shouldn't be factored into their personal score.