I know nothing about trading, so forgive me in advance - but I assumed the point of the article is to break it down a bit more specifically. What causes you to lose money quickly, what's the program doing - how do you stop it from doing those things?
If you start to remove the roads to failure you're kind of forced onto the road to success - or at least a place where you're not falling into the places you're planning around.
In the case of trading, removing the known roads to failure is no guarantee that you are now on the road to success. There are many MANY ways to fail in finance and more are being invented every day.
I suspect (but cannot prove) that this is because financial markets are "PvP" instead of "PvE", you trade against intelligent humans who can and do adapt their strategies to what they observe to be the strategy of other players in the market. If there is any form of rock-paper-scissors dynamic, this means that there will never be a stable strategy that keeps winning and so the method from the article will not work.
In most engineering problems OTOH, you are basically fighting against the environment. This can still be very difficult (see rocket science for example) but at least the laws of physics don't change from day to day. So, any progress in solving the problem you made yesterday will remain.
Successful application of the TRIZ method requires that the problem remains relatively stable, so that the options you "chip away" remain poor options forever. The markets are not like this and neither, I think, is career design.
If you start to remove the roads to failure you're kind of forced onto the road to success - or at least a place where you're not falling into the places you're planning around.