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That’s a good question, but no. It was just a bit of word play.
Antineutrinos are not WIMPs. WIMPs are weakly interacting massive particles. Antineutrinos are anything but massive, they’re almost massless, so massless that they were, for the longest time, thought to be massless. They can be a product of dark matter, as speculated, but they aren’t it tho.
I believe this map is made essentially as an amalgamation of all the years in this gif. It might make more sense to you if you observe it like that.
Ascription of historical and collective guilt, and how to do it, if at all, is a separate topic, but the underlining data is correct.