I agree. I went to a commital of ashes recently, it was in the churchyard and while we were waiting we wandered around the churchyard. I remembered so many people, spoke with Mum about them, said a little prayer for them all.
For me it gave a sense of a community that I'd been part of growing up, one generation dying the next taking their place, a cycle. And it gave a depth of meaning to the committal that I haven't found in scatterings of ashes.
Each to their own. RC cemeteries have always had a tradition of photos on the gravestones, going back many decades - it's not tacky it's just not your personal tradition.
For me, the graves with just mown grass looked better than the ones with artificial flowers but I can understand people's wish to do this if they live a long way away.
And I didn't come across a single headstone that looked "awful".