Not only are you not keeping your own Emotions in check and being rational, but you're also having a negative effect on others. You'd probably get booted out of a professional trading room.
I don't think there is any such circumstances that could ever show a market ever being down in any of the scenarios they post. It seems that literally 100% of the time they can find anything to showcase a bull market is on the way after the fact markets have already outperformed. It's actually a zero risk free market ....
Its interesting that almost all of those years was the beginning of bull markets. Only 2020 didn't last long due to the Fed induced profits recession. 2003 & 2009 were both the beginning of huge bull runs. The 1968 & 1980 runs only lasted until the end of the year with a 20-30% moves. The real breakout wasn't until December 1982 when it went up 160% until Black Monday 1987 (1000 --> 2600).