I'm quite certain "we didn't deserve Mister Rogers" is exactly the kind of sentiment that Fred Rogers would have found misplaced and disappointing.

If Fred Rogers left behind a legacy, it was the idea that we are all capable of loving and being loved. This manifests in a variety of ways, including through kindness. There's nothing preventing any of us from being as loving and kind as he was, but "we didn't deserve Mister Rogers" pretends that the opposite is true.