With all due respect, that's horsepoo. Qualified immunity, unlike absolute immunity that judges, DA's and a few other politician types get, merely makes one immune if their actions fall under "the color of law."
So if you do something that doesn't fall directly under your duties, or if it can be spun that way, your immunity is disqualified and you're F'd.
The point is, and I'm not saying it's wrong, but cops aren't immune to crap if we do stuff that we shouldn't.
You can't sue me for making a lawful arrest simply because you want to. You can sue me if I make an unlawful arrest.
I can't be arrested for a justified shooting. I can be arrested for an unjustified shooting.
In this case, the word "qualified" is a limiting descriptor.. it doesn't mean I've qualified for special immunity. Before Qualified Immunity became a thing, people were suing cops for things like losing their jobs because they got arrested despite the fact that their arrests were legitimate.
Do away with qualified immunity and you will no longer have law enforcement officers.