Late reply, but no, I didn't really have the younger generations in mind when I said this. I was thinking of my generation compared to my parents' and grandparents' generations. Heck, even comparing presidents from the last 40 years to those we had a century ago reveals a decline -- not that I'm a fan of Woodrow Wilson or Warren Harding.
If you are concluding that your kids' generation, and your grandchildren's generation are each successively less intelligent, please take a moment to reflect if that's a generational issue, or just an age issue. Kids do dumb stuff... are you sure that you or your peers weren't doing equivalently dumb things at that age?