When you're condescending and make bad faith arguments, people will find you frustrating. I'm not sure why you want to emulate your grandparents by dismissing younger people's creativity just like they did to you. Open your mind a bit and try not to become the people you hated.

Edit: Festivals have never been the beating heart of the techno scene my friend. I'm sorry to break it to you. And again, I've been to good festivals which do play this stuff - you clearly don't know where to go and you're taking it out on my generation when its on YOU.