I'm sure she's getting a ton of people online, like you, but on her actual accounts, who are making these "Prove it! Or just shut up and leave our boy alone!" demands.
If she wanted to make a bigger deal of this whole thing, she probably could. If she has incriminating evidence on him and she wanted to, she probably could. She's not out there complaining about how he still has jobs or is back on the Nerdist masthead. She's not organizing boycotts. She seems okay with letting him come back and do his thing.
She wanted the ordeal off her chest. She felt like she needed to air it out the way she did in order to move on. She didn't feel like she needed to cooperate with any investigation to get him fired. Especially one that might compromise her legally. But when HardBoys come at her saying she should be sued or something (that lying b***), she just pipes up and says, "He's welcome to if he feels like he needs to, but I have the goods on him, so best we just go our separate ways and let this one go."
Remember, she also says he got her blackballed and cost her work once they ended. So, in her mind, he can be at least a little vindictive.
So she's not holding it over his head like a sword. She's showing that she has a shield.