Eh, for the Steelers (like any team) it just depends how good you are. James Harrison was charged with domestic violence and since he was in his prime, the team didn't care. Cedrick Wilson does the same thing around the same time, and since he's a special teamer he's cut immediately. That's how life works.
It's also how the Chiefs would have handled it if it was a different player. Easy to waive an RB on a rookie deal, different to do it if it's a legit star (like Mahomes) or someone who kills your cap if you release them (like say, Sammy Watkins). Every situation is different.
Hunt's talent is also vastly overrated - no surprise that Damien Williams has been able to come in and give them 80% or more of what Hunt did for them.