If you are going to sit around and "see what happens" for 3 years, you talk to a lawyer. You gather evidence. Emails, text chats, etc. You audio record meetings and conversations with people (subject to lawyer advice). You collect enough information over a long enough period of time so that an investigator can trivially search a dumped archive of email to verify your claims.
But we are supposed to believe someone who offers effectively no evidence from the duration of their claimed tenure, and who pushes it off as "I stayed because I had a family to support, and secondly I wanted to see how far they would go." and identity protection at the level of "such as waiting for the appropriate employee turn around"
So... no Hardy Boys level of investigation was performed, no evidence was gathered, no voices were recorded, no text messages were saved, no emails were forwarded, not a single byte was smuggled out on a flash drive nestled in the poster's pocket. Nothing was done to offer even the slightest bit of recording of anything.
The poster is either the most pathetic excuse for a whistle blower that I've ever heard, or it's a poor-quality April fool's joke that is 28 days too late.