As some have written, if you're spending your day looking at youtube videos, porn or gossip websites, than I guess that particular person was dumb and lazy to begin with. It's just easier and cheaper for them to waste time from their computer than walking out of their home to buy a gossip rag or visit an adult book store.
Then, there are the people that are using websearches in the identical way they would have with trade publications, friends/family, and the library: intense research.
For instance: my daughter's roommates wanted to create their very own Thanksgiving but NONE of the girls in their dorm had ever done any mega-meal preparation for the holidays...all they had ever done when they lived at home was sit back, let Mum make it and devour it. So, for weeks prior to the holiday, the girls contacted Gran and Mum for recipes BUT, went to actual cooking videos to see "How to cook a turkey?" and "How to stuff a turkey?" They made Thanksgiving for 50 friends and it turned out flawlessly because they did so much research and video studying. Their families were 100's or 1000's of miles away, so having Mum by your side wasn't possible.
I own my own landscape firm. Before the web, I'd do a minimum of 10-20 hours of research from both my home office (trade mags) or a drive to the library. The problem was, the information available in print was dated the second it was published, so if you needed 2013 information on a particular plant cultivar, you were out of luck if neither YOU or the library had any publications on them.
Enter the web. I use *bing* exclusively (bonus points and cool daily photos) for all my research. I can be at a nursery, see a new plant that I've never seen, queue up my tablet to do a quick search, and have instant NOW information at hand. Not only does the web make me smarter, it makes me RICHER!!!! lol
No matter what is out there, some people will abuse it: fast food, casinos, booze, drugs or the web. Then, there are the majority of people who will have a single drink, only use Advil, buy a Lotto ticket once a year, and use the web for hard-core research.
So, "Yes", Google may be making the original poster dumber but "No!", it's not making >me< dumber.