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 think your approach of blocking any user who posts about politics is eliminating the most prolific posters when 95% of their stuff is non-political. This is not to say your approach is bad, just that it doesn’t actually represent “Lemmy without politics”.