I have never seen Rick and Morty, but I did read this in connection to the whole Schezuan Sauce fiasco:
"The Joke, which plays with the show’s theme that Rick is empty, alone and despondent despite having everything he could ever ask for, is that all that work was done for a silly arbitrary reason. There is no plan, and there is no meaning. It may as well be a dipping sauce.
This flew right over the heads of some of the show’s biggest fans, and McDonald’s stepped right up to take advantage of this face…
Because the fans don’t understand any level of what’s going on. If they understood Rick, they wouldn’t care about the sauce because no one in the show really cares about the sauce. It was never referenced in the show again. Dan Harmon himself explained to us that the line was put there just to rip on co-creator Justin Roiland’s love for the sauce. If they understood Morty, they would be kinder to the McDonald’s workers who didn’t ask for any of this.
And if they understood the point of the show so far - that living only for yourself is destructive and selfish no matter how smart you are - they would be ashamed at how they’re acting."