I do think visuals are a good way to describe features in a lot of products, the examples here definitely benefit from a graphic. "Most engaging hours" doesn't

I do think visuals are a good way to describe features in a lot of products, the examples here definitely benefit from a graphic. "Most engaging hours" doesn't sound nearly as interesting as that graph in the mouseover. But I think for most features of most products you probably don't need a GIF and I'd typically prefer a faster loading image in most cases.