I don't hate the prequels because I have no emotional involvement with any part of them. I've only seen Phantom once and from what little I actually remember, it was bad on every level.
Story - Weak, cobbled together, and directionless.
Acting - Elementary school terrible.
Visually - Too much going on at once, too distracting from the already poorly-written story.
Characters - No emotional connection what so ever. Several were nothing more than marketing tie-ins for toys and Halloween costumes, while the rest were just cartoons aimed at children.
I never bothered with the last two films, so I have no thoughts one way or the other.