“Is this archaic?”
In some respects I think it is. I steal memes from elsewhere, I don’t expect to be given credit for them. I didn’t create them.
Now if it’s something somebody created, like foldspace or Iron Munro, or a quote from somebody, then I think they deserve credit because they did put work into it and/or it was their creativity involved.
I think pix and memes are a bit different. Many people sign their work. Wish all would.