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(Note: dates are usually in BP format, which means before 1950, ie, before we started heaving nuclear bombs around).
From the "Implications" section:
The IntCal20 curve provides meaningful differences regarding the timing of the beginning and end of the Younger Dryas/GS-1 cold period in paleoenvironmental records.....
I am no expert, but it seems it doesn't affect things as "recent" as the VM.