I'm not having much luck encouraging people to avoid inflammatory characterizations, which includes characterizing something as a lie or a person as a liar. To show something or someone incorrect only requires providing the evidence. To show something a lie or someone a liar requires information that is usually unavailable. Here at EvC Forum I encourage people to assume someone sincerely believes what they're saying unless there is clear evidence to the contrary.
They can sincerely believe and still be aware that evidence contradicts their belief. I believe it is also possible to show intent to deceive in the works of people like Ken Ham and Don Batten.
But point taken, I've ammended my last post, though you probably still won't like it