Data was dreaming the impossible dream.
Seven was just trying to get over her inner asshole.
Plenty of people have come out the other side of Mr Borgs Wild Ride as still reasonably normal polite and agreeable persons.
Sevens problem was that no one Voyager suggested that she might naturally be a grumpy, sour faced know it all, which was perfectly human behaviour and it was they too who was trying to modify her personality into something uncomfortable and perverse.
If you lost a bet, could you impersonate Geordi's personality for a day?