When private behavior goes public, it doesn’t always end well. Complaints about “cancel culture” remind me of the folks who started whining about “PC culture.” They fear consequences. They also attempt to shoot the messenger.
The article you found seemed a bit sensationalist, but that’s an unfortunate marketing tactic in print media. This one below mentions event organizers had other issues with Halls, and it seems like they used the complaint as another reason to show him the door. It wasn’t the only reason, and he’s continued in his career.