In general, yes, that is what happens. In the end, to form an opinion, we must carefully look at what is presented, and, if we are serious about forming an opinion,maybe dig a little deeper. It may also help to look at the person as a whole, not only on some of the person's actions.

As an example, Nelson Mandela. Yes, he has stopped Apartheid in SA, but look at SA now, it is a shambles.
So, obviously there was no follow up plan.
To form an opinion the situation as a whole has to be looked at.
IMHO