That interview
Dear Harry Potter fandom:
Jo Rowling has a perfect right to say, in public, that she thinks an aspect of her work is flawed and she wouldn't do it that way today. (Actually, I wish she'd eschew all unnecessary capital letters, and promise to be good in future, but that's me.) This does not change the work in question at all. Now, if she goes back and re-writes everything from 'Goblet of Fire' onwards, then you have a right to complain, or to approve, though you can still take the original text as canon, as you wish.
Me.
Jo Rowling has a perfect right to say, in public, that she thinks an aspect of her work is flawed and she wouldn't do it that way today. (Actually, I wish she'd eschew all unnecessary capital letters, and promise to be good in future, but that's me.) This does not change the work in question at all. Now, if she goes back and re-writes everything from 'Goblet of Fire' onwards, then you have a right to complain, or to approve, though you can still take the original text as canon, as you wish.
Me.