That would definitely cut the confusion
The two groups are combined, because there's only one positive category and it makes no sense to have a separate group for that. As far as I can tell, this doesn't cause that much confusion, and it greatly simplifies the category voting as some of the neutral categories can also apply when the user considers the site good.
I'm not sure why this causes such strong emotions in you, but just because we won't change a minor detail in the user interface to your liking doesn't mean we're "stuck". We chose to group the categories this way because according to our statistics, this is the best option for both usability and the quality of category votes.I fear that the WOT team is stuck and they are going to dig in their heels.