There might be a third option, which is that he believes everything he says as do many so-called educated experts. They get hundreds of millions in government grants and tax free contributions from saps, which money they dearly want to keep raking in.
Psychological experiments have repeatedly demonstrated a powerful desire by humans to be "part of the crowd" so they are not ostracized or laughed at.
Calling such people a "denier" is enough to trigger them into believing anything and regurgitating it forever. Same effect with calling them a "bigot" if they do not genuflect to homosexuals and transgenders, as they ruin countless lives of innocent, impressionable children. That is why the Boy Scouts of America went bankrupt after the courts ordered them to accept queers - the "Q" in LGBTQ. After more than 80,000 Boy Scouts were molested by queer scoutmasters, they won judgments totaling more than $2.4 billion, bankrupting the BSA. But hey, at least there's no "bigotry" - just tens of thousands of lives shattered. The world is being financially shattered and divided by the "denier" name-callers. It doesn't take much to set them off.
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