If you kill all the germs around you and live a completely sterile life, then when germs do come along you're not gonna be prepared. And nevermind ordinary germs, what are you gonna do when some supervirus comes along that turns your vital organs into liquid ****? I'll tell you what you're gonna do, you're gonna get sick, you're gonna die and you're gonna deserve it because you're ****in weak and you got a ****in weak immune system. -George Carlin
I can imagine he might have kept mostly quiet, but might have had a few snide disparaging sarcastic comments, kept toned down and relatively low key. The voices of Classical Liberals right now criticizing those on their own political side are not very loud. As for that specific video, he probably would be trying to play at down, were he still alive, and say "This situation is different".