What is the meaning of "your argument is invalid"? [closed]

Does the phrase "your argument is invalid" has some idiomatic meaning?

Because I am often seeing it in places where its literal meaning doesn't make sense.

In some cases I felt it means something like 'Nuff said. Is that correct?

For example,

this meme


No it is not idiomatic, it is literal:

Invalid (not valid):

  • An invalid opinion, argument, etc. is not correct, usually because it is not logical or not based on correct information: an invalid argument.

Cambridge Dictionary