FWIW, Given the surrounding context, I interpreted "Come on, dude" as an exhortation for the author to cut themselves some slack. I agree that 100% correct 100% of the time is an exhausting bar to maintain, and one that we should be working very hard to ease this requirement.
I think it's worth pointing out that the difficulty / impossibility of achieving that bar (at least in the general case) is one of, if not the central tenet of Christianity, ostensibly the dominant religion of the West for something like 1500 years. Regardless of one's metaphysical beliefs, it's worth remembering that arguments for the necessity of grace and slack in positive interactions have a long historical precedent, and I find we ignore them at our peril.
I think it's worth pointing out that the difficulty / impossibility of achieving that bar (at least in the general case) is one of, if not the central tenet of Christianity, ostensibly the dominant religion of the West for something like 1500 years. Regardless of one's metaphysical beliefs, it's worth remembering that arguments for the necessity of grace and slack in positive interactions have a long historical precedent, and I find we ignore them at our peril.