Isn't "deep learning" specifically referring to the breakthroughs that finally started addressing the issues preventing architectures with more than a single hi

Isn't "deep learning" specifically referring to the breakthroughs that finally started addressing the issues preventing architectures with more than a single hidden layer from achieving anything? Unless I'm getting all of that wrong, it doesn't sound like that bad of a term. I get that it has since been used and abused to absurdity. But it's not like it came out of nowhere at first.