The parent of their comment seems to be confused by how the EPA and IARC are not related, so I don't think they do have a point. Prior to my comment, the comment you responded to originally posed the question of whether the EPA could ban red meat due to it being on IARCs list, before being stealth edited.
I don't think the point was organizational, that decisions by the IARC must be respected by the EPA, but more common sensical: if a substance is roughly equivalent in risk to food, which is ingested, then it surely can't be more harmful to spray it than it is to eat it. That may not hold in all situations, but it doesn't seem crazy as a general principle.
