As an inventor, I would hope he would be more open minded to the potential benefits, but I can imagine my grandfather saying the same thing, and in a sense they are correct. Children can access the internet and use it to do all their thinking for them, but that kind of person was never destined to be an inventor.
The way I see things, the internet has enabled people to be more innovative and imaginative. We no longer need to look up research publications to see if we remembered someones theory correctly, we can have previous designs instantly available and think of possible ways to enhance them or redesign them completely without needing to devote 20 years of our life memorizing everything in existence. This enables us to "go with the flow" and let our brains continue along a spark of genius.
At some point in the past, I can imagine someone probably said the same thing about a some other inventions. "writing if for the weak of mind, you should just pass down all your knowledge via oral history." "Calculators are making people bad at math, everyone should have a slide rule burned into their memory." "Ugh no need make spear from rock and stick, Ugh kill fine with rock" etc etc etc...