They're probably doing that to protect the identity of any Google workers providing them with information. If they posted the actual meme, Google could possibly trace it back to an employee and fire them.

Some of the memes they do have in the article, they note they are reconstructions and not the actual memes from Googles internal channels.

I agree it's long though, they could have just recreated them and skipped the written description.

You need to hallucinate the memes