I just told you you could read through the Dark Souls III OTs, and there's also a convenient link in the OP of this thread to a Steam Community thread on this specific issue that's 112 pages long, as of my typing this.
It's not my job to be your personal information aggregate, and your ignorance of something or unwillingness to be informed about it isn't the same as it not existing.
Namco-Bandai also officially recognizes it's something that's happening.
Though they're off the mark claiming that the "false flags" don't actually serve to restrict players.
Don't worry, I already read the OTs and that steam community thread. Guess what, it quite literally doesn't tell anything about encountering cheaters in the game, which is what the guy you initially quoted was talking about and you tried to call him out on it.
So no, Dark Souls III has no "massive cheating problem". It has a "massive bug".