Do you know that most traders and forum users here lies about their dealing in bitcoins. Some exaggerate to their family and friends the unrealistic profit they claim they are making online through bitcoins and these same liers don't tell their losses. Have you ever lied or bragg to your friends about bitcoins.
I think it's a looped circle. If most traders in your opinion are lying about their income and losses, how can they tell you, are they really liars. Do you understand what I mean? Most likely you are right, but we will not know the real state of affairs.
How will you even be able to tell if they are liars or not, when you can't actually see through their trades. However, in reality, a whole lot of traders have refused to always learn and looking for quick means to get rich and a lot of them in that category are losers, no two ways about it, but if anyone decides to come here to talk about their success even when they have failed, that is not my own decision to make whether they are telling the truth or not, you can deceive everybody in the world, but you cannot deceive yourself.