That is perfectly fine.
It is a modest memorial to the untimely and unfortunate death of a prominent actor.
I think there is a modest memorial for James Dean where he was killed on his motorcycle on California Highway 46.
The mistake Marion Morrison fans make with John Wayne is elevating him to a historic figure with a consequential and lasting legacy.
He was a mediocre actor who appeared in numerous B-list movies.
My theory for why Marion even found the purchase that he did, is there was a cottage industry dedicated to making Wayne a proxy in the Cold War and Culture wars of the 20 th century. Marion provided the caricature, the avatar of the moral fortitude, courage, and independent spirit that America wished to project about herself.