Humans have honored the dead since before homo sapiens. Laws can be complicated, contradictory, and confusing; respecting the dead is clear and primal.
Yeah, this probably won’t change a lot of minds, but some folks will see there is something wrong about a man who would dishonor the dead to celebrate himself.
I’m not sure how you come to that conclusion, even with the internet meme version of the Dunning-Kruger effect. In the meme version, the incompetent think they are most competent, but I don’t think it follows that the most competent would think they are least competent.
I would summarize the actual Dunning-Kruger effect as: people tend to think they are a bit above average, and actual skill factors in only slightly. Worth emphasizing that these results are over groups of people, and individuals have extreme variation.
https://en.wikipedia.org/wiki/Dunning–Kruger_effect