There is a difference between "Being able to waste your entire lives on video games" and "Being forced to waste your entire lives on video games"... And it's not a black and white thing, it's a spectrum. More and more people are being essentially forced into virtual worlds because the real world is not giving them a chance to feel basic satisfaction.
If the odds of achieving your goals and leading a satisfying life in the real world approach 0% (e.g. because of hyper-capitalism and monopolistic, anti-competitive, centralizing market forces), then it's completely understandable that you'd want to escape into virtual worlds which give you the dopamine rush which your real life continuously fails to deliver.
That we've evolved for the former situation and seem to be miserable in the latter seems to be the grandparent's point.