The most charitable defense for Ari is all he knew is Vince has a bunch of NDAs, which if you are doing a billion dollar deal with someone like that you'd think at the bare minimum you'd ask what's up with those.
As far as Bruce, not only am I sure he knows every detail that went on I'm fairly certain he's one of the Unnamed WWE Corporate Employees in the lawsuit. I wouldn't be surprised if his podcast goes silent for a while, at least it should if he's smart (or his lawyer is smart enough to have him STFU while this plays out).