Is there any documented case about this? I have doubt any exchange care the funds comes from service which spam this forum.
No there is nothing.
What the guy is saying is pure fantasy full of shit
Beside blockhain forensic tools, imagine if CEXs have to scroll the web to monitor spams... what is their definition of "spam", after how many messages it is consedered as such. Who they're to decide on a manipulation? That's not their job..
The guy is definitely a troll. I fell out of my chair