Personally I would consider the extreme harm of animal agriculture against all of the sacrifices. I would consider long term malnutrition morally better than continuing the extreme harm against animals, but that's a hard call that they didn't make any statement on.
Evidently 47 million / 330m Americans are food insecure, so about 1/7 actually have to make a tough choice and I wouldn't fault them nearly as much as the huge majority that eats meat just because they think it's yummy. The reason let them eat cake is ridiculous is because it's unbelievably out of touch with the common person. In this case 80+% of people have access to the "cake" (having a choice). It's like saying "touch grass" is a sign if privilege because not everyone has the capability of moving around outside on their own. You are technically correct, but the implication is "if you are in the small minority that cannot do this, you are not who I am referring to." And even then, the implication with "personal choice" is that it's not a tough moral decision where you are massively hurt by it. Technically it is personal, and it's a choice, but people don't usually say "oh yeah I decided to give up not being freezing in the winter as a personal choice." That's a hard moral decision.
There is absolutely no shot that at least 95% of people on lemmy do not have access to some sort of grocer in some way. 83% of Americans have access to it, and lemmy skews heavily towards people in tech / more well off people. Even having the time to look into alternatives to reddit and be knowledgeable enough to actually engage in it is a privilege which most people do not have. I might make a post about it just to see, but that sounds so unlikely that more than 1/20 people that educated with the time to invest into learning how to use lemmy would be in the <20% who are food insecure
I think all of what you showed they said was fair. 83% of people having a choice is the vast majority, and bringing up food deserts and people who can't afford anything else, without starving or great hardship, is something they (implied) they would obviously concede.
A revelation to me, evidently plant based diets are just on the whole cheaper compared to meat, though this may not be true in food deserts. As for meal prep time, yes that is very fair but can be alleviated heavily with getting a 2nd hand instant pot and making meals in that which take unironically 30 seconds, which is shorter than a drive-thru.