Comment on A dark matter interpretation of excesses in multiple direct
  detection experiments [arXiv:2002.06937]
  In their recent preprint [arXiv:2002.06937], Kurinsky, Baxter, Kahn, and
Krnjaic assume an unphysical ionization yield for plasmon excitations in order
to claim a possible dark matter signal. Their proposed signal is not possible
based on known physics, but their proposed detection method warrants further
investigation.
