Initally yep. DD1 wasn't the first grandchild on my side and my sister did what mum told her. My mum has since changed her tune and was doing BLS with my youngest nephew (whom she cared for 7-5 5 days a week).
She was the first on DH's side and they expected me to do what they thought....they have since put up or shut up lol.

Now....call me lazy but it's the easiest way to go I reckon.