For what happened Jones likely shouldn't have been suspended. The problem for Jones is his history. When you're a career screw up all you've done for yourself, in the future, is when anything comes up against you, even something this minor, you get the hammer by virtue of all your other issues.
If Jones hadn't been in so much trouble prior to this latest nothing incident then he wouldn't have been suspended. The fact that the guy got in trouble, even minor in nature, again, after just getting reinstated from a year+ suspension is what got him suspended again.
He's being held to a tighter standard because he's gotten in more trouble than some others have.
Now I will agree that others who've gotten into trouble for multiple things (Be it on the field or off the field things), like Jared Allen, are not being held to the standard they should be.