Why do grandparents have to have stupid nicknames nowdays?

gndprntsIs it just me or do grandparents suddenly have to have stupid nicknames these days?  When I was a little boy I called my grandmother, “Grandma”.  I expect had I had a grandfather I would have called him, “Grandpa”.

Now I’m hearing people with kids referring to their grandparents using bizarre names that make no sense at all.  Why do parents not correct them?  Why do they perpetuate this strangeness.

Why is Grandma and Grandpa not good enough anymore?