Someone learning to play the piano (an unnatural task) needs to monitor their behavior and look for good habits to reinforce and bad habits to unlearn. But you do that during practice, not performance. By the time you're ready to perform, playing the right way should seem "natural" even though it's still a highly artificial task.
I think there's something like that here. Thinking rationally is an unnatural act and some folks are interested in figuring out how to better train for it. Maybe it's a bit of a weird hobby, but I'm happy there are people investigating it.
However, it's still early days for figuring out which training techniques are effective. This checklist is a sketch of bad habits to look for, but how best to use it isn't settled yet.
(There are places for checklists in production. They're useful in high-risk situations where error has to be eliminated. Pilots rely extensively on checklists, and they're starting to be used more in hospitals.)
At the same time, while the human brain isn't set up for objectivity, it is set up for survival -- including survival in a social milieu. Some non-rational behaviors such as emotion and stubbornness may be valuable survival traits.
If I were to put anything on my own checklist, it would be: "Did I give myself enough time to think about this?" I can be persuaded by reason, but on my own timeline, and I'm a terrible debater, so I don't change my opinions based on debate.