50 year old curbs here so they were designed properly. I swear curbs have not been properly designed since the 70s.
Newer curbs seem to have more slope with a sharp edge on top which get whittled away by the snow graters and of course square curbs are great if you live in a place where they have no snow.
Im surprised the grass was not missing from the yard this year as our street was asphalted in the summer so not much curb left but grater guy was nice and stayed a foot away from the curb