Reminds me of: https://www.wired.com/story/null-license-plate-landed-one-hacker-ticket-hell/
A guy thought it would be funny to change his license plate to NULL.
A new ripoff of an old classic
Is it a ripoff if they credit the original?
Are you implying that the credit is here? If so, where? I am not seeing it.
Lower right corner.
if they make it almost exactly the same and “credit” it in the smallest font possible and didn’t get permission from the original author… i would say that’s definitely a ripoff
didn’t get permission from the original author
Tell me you don’t know xkcd without saying you don’t know xkcd. These comics are licensed as CC-BY-NC 2.5, which means you are allowed to remix and use them, without explicitly asking for permission, as long as you attribute the original/author (which is given here) and as long as you do it non-commercially (which is given for this post IMHO).