BULLSHIT.
Ever heard of thumbprints?
Question is how much you can trust the word of some guy on the internet who claims he's taken a thumbprint in the first place. Presumably part of saying you've done a thumbprint is saying how special it is. That's part of the deal - say you've done a thumprint and then make up some crazy story. "I was running down the street with an elephant chasing me in a patrol car".
I must admit I don't find 4 blotters is 4 times as powerful as 1 blotter. Particularly when you get a bit of tolerance - taking a few more blotters than normal isn't going to cause that much havoc.
But I do agree that once you've told someone they've taken a massive dose it's going to affect the trip because some people are prone to panic and hysteria when tripping.