I would argue that kneeling and on the tongue is faster and more fluid than standing with Eucharistic minister placing the Eucharist in their dirty hands, stepping to the site, and then placing the host in your own mouth. Two operations as opposed to one so what is he even talking about.
McElroy is so disgusting he does not merit to have the noun Cardinal added to his infamous name.
We can expect drive up windows built into and newly constructed churches - think of how it will improve the flow.