I personally don't believe this. IMO, this is a company who is looking for a fall guy, and _most likely_ it's going to be somebody who raised a stink about all the security problems during their time there.
Form your own opinion, I'm just a guy who worked at Ubiquiti for a year, raising all kinds of hell about the security, architectural, and operational problems that I saw while I was there.
But what do I know...