I had not heard of this, and I imagine many others, even D&D players, haven’t either. A link helps.
It looks like whoever is behind this is trying to fund a bronze memorial statue of Gary Gygax, to be placed in a park in his hometown of Lake Geneva, WI, which would be built as a statue of Gygax sitting at a gaming table, and the table itself would have a D&D-style gaming map engraved on it, with the idea that people could actually sit and play D&D at that table.
Give enough money, and your name is placed on a paving stone at the memorial, too.
It’s being run by a guy named Paul Stormberg, with the approval (apparently) of some of Gygax’s family – “some” is the key word, I suppose, because I know that there is some friction amongst his survivors. One of the supporters of this was Gygax’s late son Ernie, who was a vocal racist and transphobe in his final years, and the subject of some lawsuits as a result.