Finally saw the episode with Pickle Rick. Why did this become the quote for people to loathe?

The episode was pretty funny. "Pickle Rick" is a mild example of "L0l Randumz Xd" humor, because the reaction of literally every other character is that it's underwhelming and unfunny. the rest of the episode has good jokes, references, super fluid action and gore.

Edit: I don't want this on the front page while US-Iran stuff is going down.