Fair question, but I get the argument Hoppen and others are trying to shame the rest of us into thinking. With presumably less people going to restaurants, and if people choose to not tip on the takeout, then that means a lot of servers are likely missing out on wages they would've otherwise normally received.
I think each person should make a decision based on what they feel is right in the given situation. Some of the places I get takeout from, I pay the person who owns the restaurant directly because they're often working the register. I'm probably not going to tip in that scenario. I also can't tip a server through DoorDash.
Shame on Hoppen though for treating it like we're all murdering puppies by not tipping on takeout. The things he chooses to get passionately irate about are often comical, and of course, he's never wrong.