They won't, because none of these other things happened in the digital (Internet) age (except Lawler, but you shouldn't fire somebody over an accusation, only if they're found guilty).
Also, booze and adultery are legal (might be frowned upon, but you aren't committing a crime - not the same as hate speech.)
It's not WWE's fault. It's the pressure of social media complaining - and if enough people complain, they start losing advertising dollars If it didn't make good business sense, they'd have rode it out and not done a thing They might have gotten away with it during the Attitude Era, but not now it's gone back to PG-13.
"Your mother puts license plates in your underwear? How do you sit?!"

Because none of that made media headlines.
Once the heat has died down Higan will be brought back, Triple H knows what's best for business and he's not going to let the money WWE can make off Hogans name slip away again. The whole Benoit treatment of Hulks name in WWE for the time being is a load of crap so WWE doesn't look bad or they lose stock ect,,, while backstage Triple H and MacMahon are probably talking to Hogan on a weekly basis biding their time for when to return.

But at the same time those who did grow up watching him are grown ups too. And he's rarely wrestling these days anyway. Most recent years were spent in TNA.

Why just pick on him and not all these other wrestlers I mentioned?
Because he was an idol and role model for millions of kids. Why can't people understand that?
Emojis=
Emoticons=

You forgot to mention that Scott Hall shot a man dead.
And Fabulous Moolah ran a prostitution ring.
And Pat Patterson getting young wrestlers fired for refusing to do sexual favours for him.