Wejo, I've never seen any of those posts. Can you verify that they are real?
1. It seems suspicious that we would have missed so many REPORTED posts.
2. If those posts were real then I would have been all over your back about giving him at least a one month vacation.
3. It also seems suspicious that the poster would have saved those posts without date or thread titles.
I copied and pasted a couple of the quotes into the search function just to check. Both ones that I looked for are real and came up in the search results.
For example, "To be frank, I would guess that at most 5% of white runners are doping, whereas amongst elite African/Arabs the figure is closer to 95%" appears here: https://www.letsrun.com/forum/flat_read.php?thread=8403869