The point in terms of choice we have to be confident
I don't think so. Knowledge should be the most thing to consider before you make a choice. If you only rely on confidence, it sometimes makes you regret it since it is very risky and possible to lead you to a terrible situation. I suggest to analyze everything with your knowledge and experience first before you decide anything.
You point out something in his comment, then disregard the next sentences in his paragraph. In other words, you "NITPICKED".
He stated that "In the world of bitcoin we have to be smart in finding coin market information", meaning that we should smart to gather information/Knowledge about what we are going to deal with. And of course, as he said in his first statement, we should be confident with the choices we would make after we gather the information.
And yes I agree with him regarding this one, as you should always be the one to be confident in your own decisions regarding the information you yourself have gathered, and you yourself must be ready for the consequences of every decision you make, hence the "CONFIDENCE".