I really don't get why Packers fans would hate Rodgers or the Jets. It's not like this is LeBron-decision-esque where he's leaving in prime of his career. I know he has recent MVP but he's in his 40s, he gave his career to GB.
Maybe if they go head to head a little rivalry for that week is understandable. Seems pretty weird to me. Definitely seems weird to be "cheer about injuries" level of anger.