It's just that everyone in the HOF gets looked at through rose colored filters while TO gets looked at as if he were to be the worst person to ever be inducted into the Pro Football HOF.
Look at some of the guys listed here below - all Hall of Famers, and all guys with "character issues":
- Cris Carter
- Michael Irvin
- Lawrence Taylor
- Charles Haley
- Deion Sanders
- Warren Sapp
- OJ Simpson
And that's just the tip of the iceberg, while excluding other guys who many could claim to have "character issues" : Dan Marino, Mike Ditka, Reggie White, John Elway, etc.
Point being, TO wouldn't tarnish the HOF nor would he be the worst person to be inducted, far from it IMO.