I feel obliged to intervene here in the interest of fairness. An objective, scientific approach to the question raised by the OP does require specific evidence, not just vague allegations.
I think it’s fair to say that Sam is quite far to the right politically, and therefore many of us will strongly disagree with his political posts. That’s not necessarily the same as being factually wrong, though sometimes it might be. If this is what the OP is referring to, some examples would be helpful.
Conversely, here is an example of where Sam made a mistake and readily admitted it, even though it turned out that by sheer coincidence he was partly correct.