I had a friend in college -- not a bright fellow -- who was convinced that a person could only ever be sent to prison if they confessed. He was confident that no matter what he did, he could never, ever be sent to prison because he simply wouldn't confess. So, he was safe.
I think Hunter is basically following a similar strategy, and I think it's working for him.
Most Lefties would probably side with Biden even if he gave a primetime national addresssaying “yeah, I did everything I’ve been accused of”, even if they weren’t vocal about it.