This does not make sense. Its like saying the estimated pKa of aspartate is problematic because it says nothing about how the amino acid is biosynthesized.
I gotta say, the comments by Aileen Pey seemed to really miss the point. She was literally arguing this was all just one big coincidence; that the plate motion is slowing and we measured their speed at the right time for them to line up with (false) speeds. But even if you grant accelerated nuclear decay, one would think a slowing would show up in the radiometric data, since most mainstream YECs accept that radiometric dating can be used for relative dating of events (in this case, the cooling of the ocean floor as plates move).