Memes? We don't need no memes!
A lot of angst and confusion over the (well-intentioned) memes-cum-handbook post resulted from the "cum". On the Sliding Scale of Silliness vs. Seriousness , memes lie closer to the Silliness end, while handbook lies closer to the Seriousness end. The post tried to combine the two into one, making it difficult to figure out what kind of answer was expected.
Since the wording of the post ended up creating multiple legitimate goalposts, voting on the responses was similarly confusing. For example, take Myles' answer "IT/Dev workplaces are special", which was heavily downvoted. It is clear that the problem described there is a real one, but it got downvoted because people thought putting this in the "handbook" would somehow justify this problem, even though the post explicitly says otherwise.
As a result, I voted to close the post as unclear what you're asking (and it has since been put on hold by a moderator at the author's request). My suggestion is to now get rid of the whole post since it already carries so much baggage. If really necessary, create two new posts from scratch, but I personally see no real need for it.
I agree with Joe's answer that a memes post will create an "insider vs newbies" divide, which is undesirable. Moreover, I had a look at the memes posts of other SE sites, and I don't find them particularly interesting or useful. As an aside, I used to be a fairly regular user on Anime.SE until a few years ago, and I still don't find their memes interesting.
The handbook post might be somewhat useful, but I fear it will only end up being misused as a Your Princess Is in Another Castle on the main site, which we should avoid at all costs. We already demand that site newbies read and understand the entire help center, meta, and other obscure places before making their first post, which leads to some hostility. We should avoid adding "Haven't you read the handbook before posting?" type responses to the list.