By that viewpoint, everything is rational. If someone hears voices in their head that tell them to shoot up a school, there’s also some reasoning that may lead them to actually do it. That doesn’t mean it’s rational. Can you give an example of behavior you consider to be irrational?
No, saying a particular thing is rational is very different from claiming everything is rational.
People will make the wildest claims about Trumps' polices, even people who should know better. A good example is Jeffrey Sachs saying Trump's policies should would fail an economics class - but one of the people devising Trump's economic polices got a PhD from Harvard while Sachs was a professor there!
