>>281455388
That only works for genres that are flawed in ways that 'deconstruction' (in the TV Tropes, non-Derridian sense) works for. The elements that could potentially be deconstructed in this way are mostly complete fluff conventions that works of the genre itself don't take seriously in the first place, like "how transformation sequences work" and other nonsense like that.
Madoka doesn't even attempt to deconstruct things like that even, instead it just operates differently than a typical magical girl show, giving the characters a choice to be contracted to gain powers, rather than being born into them and having to learn to use them wisely, as is normal for the genre.
Complete sincere magical girl shows already had more than enough 'bite' and complexity to them beforehand, and Madoka didn't advance anything in that regard. It's more or less an example of mahou shoujo that's just less girly than the norm, and isn't inherently superior for that.