They may just be playing "pay for it chicken" where they are all sat waiting for someone else to do it

With my age I've seen plenty of shit around death and funerals so nothing surprises me

Might be as simple as nobody can be bothered to make the effort

I know one headstone wasnt put in under the excuse of "If I put one in it means they are finally gone to me, I just can't" which people can sympathise with, at least they did until family found out it was because they had stolen the funeral funds for the headstone

If your gp is going into the same plot he might just be thinking it will get sorted when he goes

Go ask him and remember, what's on top of the grave is for the living

Turning up now and again is for the person in the plot, they wont care what's above them