Yes and his motivations per se are not available to us to scrutinize. His explanation of his motivations are one piece of information we have about them among m

Yes and his motivations per se are not available to us to scrutinize. His explanation of his motivations are one piece of information we have about them among many others. Choosing to dismiss all the others in favor of that single piece of information is a choice you can make, yes. But it's not the only choice, not the most "pure" or neutral or correct. You could weigh the man's word so highly, value it such that, you personally need no other information. But then we're back where we started.