It would give WWE more mainstream bad exposure. News reports and things of that nature don't pick up and report the good things about wrestling just the bad. The steroid scandal story for example. Even the deaths, the only 1's that get mainstream news report are the one's that end in a tragic way, see the Benoit situation for that, which again brought up steroids.
WWE will hit yet again (if Jeff does get the 3rd strike), WWE's WWE Champion Jeff Hardy has ben fired from the WWE for following his 3rd strike from their wellness policy. How will that look, WWE is pushing for the kids right now, parents would see this look up what happened to their child's hero, see he's been fired for drugs, question why the WWE would let someone who's a role model, represent their company.
They'll loose the very audience that they're trying to get. Let alone the Hardy's back story where they trained themselves to wrestle (backyard wrestling), when during their movies (shows I think too) it says "Please do NOT try this at home" It's hipocrytical. There children know that, say "Hey they did backyard wrestling, watched it, and trained them selves, and look, Jeff is the WWE Champ! I wana be champ too, lets go wrestle!!" They have somebody representing their company who has done the very same thing they tell people (kids) not to do, someone who will give them nothing but bad exposure, someone who will give the idea that it's okay to do drugs, to take no resposibility, and still get to the top and get what they want, someone who will have them losing money, losing the very audience they are trying to pull in.
This is all of course hypothetical if he sufurs his final strike for drugs.