I tend to presume George has rejected people who do want to help him, under the condition that he stop. national attention every other day. Staying invisible can be done, even today with the Internet and facebook. Did George ever sell Angie, his second painting?
At least you admit you are "presuming". This guy is a shit-magnet. Staying invisible cannot really be done in this type of thing, sooner or later someone somewhere will want 15 minutes of fame and call the police/media/friends/etc and next thing you know it's a news story because it involves someone like George Zimmerman.
And stop what, exactly, existing and being a target for opportunists?
Stop what?
He is NOT seeking national attention, people just don’t leave him alone.