WotC Fails to Credit D&D Co-Creator.

[Rafael]

Lenore Lazypants? :? whad up wif dat Rafe?

Understand that I do not.

Why they don't do it? Likely, because they don't care.

Anyway, Arneson does have a memorial - the studio named after him at Full Sail. That's a more significant memorial than a statue, I'd say.

Sure. Though this was, in the end, something done by people not formally related to his arguably greatest invention.

Now, since Wizbro seems to have discovered nostalgia as their new marketing tool, probably something like the Gygax fund, etc.
is not off limits for the Arneson estate as well.