Do you want someone to blow sunshine up your ass and tell you he is wrong? Who knows if this is all random or not, but there are obviously people making money. If they consistently make money randomly for years, then I guess randomness isn't as random as we once thought. I'm waiting for the author to come out with his second edition, "Fooled by Chaos." Should be another quick read.
if your position sizing per trade is too large you can easily blow out. Also systems /markets change and you need to realize this. A system that works in a 20 year bull market won't work in a bear market. Robert