Start with the snapshot. Start with the connection. Figure out why grandma cares about the subject and make that the keystone in a photograph. Then pile on the better gear, experience and technical tricks to make it a better damn photograph than grandma can take.
Yes! Yes! Yes!
The irony of dismissal via snapshot is that “snapshots” are almost always the most-posed and edited photos in the album. Seriously. Think about all the photos your parents, relatives, friends’ parents, etc. took of you. “Everybody get together. Smile. Stop screwing around! You too! Okay let me back up and get everyone in. On three. Okay, I think someone blinked, let me take another just to be safe. etc. etc.”
Aspiring to take meaningful and good family photos is all I truly care about in my photography. That this is somehow an inferior practice? Please. Those are the only photos most of us really care about.