that's the point :) and if we now go one step ahead. Tenor and other gif databases are also not the creators and I'm sure they don't know :)
And another step forward, I'm 100% sure there is nobody that owners the right of the pictures where the meme is built on. In most countries accept by law.
That makes it IMO impossible to credit someone.
3 lines of text are that awesome?
The situation of the picture?
The guy that shares it with others?
I think all steps alone are close to valueless :D
I mean i love to post memes, but not all memes and headlines are funny. So if i look over i select the (IMO) funny ones.