Accurate. Psychology, history and the intersection thereof broadly supports the idea that we drastically overestimate our ability to measure character and intention based on in-person interactions. Some oft cited cases being how numerous British public figures who sat down with Hitler tragically misread his intentions, in contrast to those who appraised him from a distance based on actions, policies and writings. Likewise, GWB's famous ability to peer into Putin's soul.
I would, however, add that just because most people are bad at estimating others doesn't mean that everyone is equally bad. There may be some people who are incredibly good at seeing where others are coming from and what their true intentions are. But, of course, everyone's probably overestimating their own capacity to estimate others.
