And nearly no one replicates. I'm sorry that I can't give you info. It's not useful to me or my family to prove this. But consider this a warning. If you move subtly enough you might be able to ask the right people without triggering the defensive walls.
I know I sound like a crank, so I understand if your weight on this warning is not high. But it feels wrong to not warn. So I've done my duty to the extent I find comfortable.
FWIW I believe in the scientific process, and I very much like the idea of long-term fundamental science. I'm not a Trumper, or an anti-science loon, or someone who rejects modern epistemology.
Your epistemological strategy is correct. And for all I know you are more correct. After all, given any random arrangement of points there will be clusters. And assuming you draw circles randomly, some circles will coincidentally appear full of points. But if the circle is the space of visibility of a sapient being, they will mistakenly determine that all of space is full of points simply based on their own circle.
So just because my immediate circle has encountered this enough may not mean that this is common.
Unfortunately, there is no true way for us to safely exchange information on this front for the positive case (there is fraud), only for the negative case (there is no fraud). So I guess we each act as if this circle is the entire plane and maybe the world will apply sufficient pressures to tease out who is right.
Scientific scam (or scientific mistake, not necessarily deliberate) is well documented in fact. It seems that >1800 published articles were retracted in 2020 by scientific journals, including 72 related with covid [1] so, maybe is not common, but yes, sometimes it happens. There is nothing extraordinary in that idea. The ideology that requires scientists to be a replacement for the figure of the religious saint is stupid.
[1] An example: 5G Technology and induction of coronavirus in skin cells. Biological Regulators & Homeostatic Agents. July 16, 2020. "showed evidence of substantial manipulation of the peer review"