Well, one could also argue that Gordon plays in a vastly more scrutinized era - both in terms of media/social media coverage & Goodell and his "new sheriff if town" regime.
Its certainly possible a lot of those players were every bit as much trouble as JG, but either got away with it with local LE, or were given a pass by the media/team.
When i was a boy in the 1970s or even 80s, a player had to murder someone or get caught with a van-load of weed to even make the news.
From what i understand, "North Dallas 40" was a fairly accurate depiction of the NFL back then.
If Gordon played back then, none of this would be spoken of until he retired.