JokersUpdates.com: BB Discussion - "The fan reaction to Haley Thogmartin is pretty negative right now, particularly among live-feed viewers

A vocal group really dislikes her. Recent Reddit discussions describe her as “insufferable,” mean-spirited and hypocritical, with complaints that she talks down about other women and then portrays herself as the victim when others criticize her.
Her treatment of Taylor and Melody has been a major source of criticism. Fans have been debating where the Haley–Taylor animosity originated, while recent episodes have shown their confrontation escalating.
The live feeds appear to be driving much of the backlash. Some viewers believe the CBS episodes aren't showing the harsher side of Haley that they see on the feeds.
But there are definitely Haley supporters. In the same Reddit discussion where people were criticizing her, other fans simply responded, “I think she's great” and “I like her.”
She's becoming a major character on the season. Her recent confrontation with Angela was explosive enough that Entertainment Weekly released an exclusive preview of it, with Angela accusing Haley of making a “bitch move.”

Bottom line: If you're gauging the online fan temperature, I'd characterize Haley as one of the more polarizing—and increasingly disliked—players on BB28, rather than saying she's universally hated. The strongest criticism is coming from people watching the feeds, who feel the edited show is giving viewers a softer version of her.