If I accept everything about the studies in here, that really only means people can be rational if they try to be and in put in the effort to get the right info

If I accept everything about the studies in here, that really only means people can be rational if they try to be and in put in the effort to get the right information for what they want to do. That's also limited by what you can remember to think about at the time or successfully encode into plans and notes. The problem is, lots of people don't put major effort into doing so. They drink alcohol, they get addicted to opiates, they have massively high time preferences (possibly due to previously mentioned), and they take massive risks. People may generally be rational, but running up to someone you think is insulting you, attacking them, and having no escape plan is probably not helpful for achieving your goals, but a lot of people do it every day.