It's sad, there are still many people who think the moon landing was a fake (I've read somewhere 25%). I guess the main reason is that they need some basic math and physics education, or maybe they are just dumb, as seen in this video (you can skip to the end at minute 4:00 without missing something to see his point) :
Of course, the explanation is obvious and at least this is one of the higher rated comments: The Apollo Hasselblad cameras had a field of view of 47.5° and the DSCOVR camera has a field of view of 0.62°. The author of the video suggested to ask a photography shop to "work out some math". It's basic trigonometry, all distances and sizes are know, every high school student could do it. He could even do it with a sketch and a ruler on paper, without calculating anything.
And then there are people who might be clinically insane, like this Youtuber:
But still, more than half of the viewers liked the video