Sorry, I don’t mean to pick at you but… what?
If you were to anonymously post the name of an academic fraud, you personally would necessarily be found out, and it would ruin multiple careers?
The powers that be know who you are, know of the fraud and its nature and those involved? You’ve been privy to this big juicy secret that’s shared by many, but if its content were to be revealed, you would certainly be the one pointed out?
Are you the only person that could reasonably know about and publicly object to this fraud? If so, is it a necessary function of your social or professional life to cover up this fraud? If so, I’ll go back to “why did you post?” (“Sharing anecdotes” isn’t really an answer to “Why did you share this anecdote?”)