I see a limitation, but it depends on how he perceives the information. This is getting into some murky waters surrounding the mysteriousness of consciousness.
What does it mean for him to know, really, any of the information on the internet? Is it something his brain can access but he has to interpret the data himself, with his own human intelligence? Or does his brain immediately provide the necessary relationships between concepts? For example, if he uses his knowledge of Crispr (gene-editing method) to conduct or lead a biochemistry experiment, does he also recall all the complexities and consequences of that experiment?
It's an interesting question, and I think it has an impact on how he shapes the world.
Assuming the latter and that he can dispose of useless information (cat images), he'll be a real life Dr. <PERSON>. Unfortunately, he won't know the future. He's limited to the information that's available. He's the best and ultimate contributor and distributor of information but he won't have access to esoteric information that others don't have.
Some fantastic uses of him:
* Medical science. He can diagnose anything. Every diagnosis and symptom will be available to him. Every ICD-10 code. Every gene. 209
Every protein. Every chemical. Everything that's documented will be available to use at his disposal to drive medical science.
* Physics. He has access to all of the known published papers from Arxiv to Icarus. And since he has every piece of information known about atomic theory and quantum mechanics, he'll be invaluable to solving the problems like the ones around pure nuclear fusion reactors or bringing a low-cost approach to sending rockets into space.
* Engineering. He can be contracted to solve incredibly complicated engineering problems. With his knowledge and expertise, we'll constantly have new inventions and machines that will be boosting our prowess in countless number of fields.
* ...
As you can see, there's a pattern. With instant access to all of our information, <PERSON> can use the biological complexity of the brain and the information to solve a lot of problems. Even if it's a lot of information, he can start using his abilities to help scientists remove information from the brain as part of his first priorities so he can start focusing on useful information only.
Then by providing relevant, concise, and cutting-edge knowledge, our technological growth (which in turn breeds more technological growth) will be boosted tremendously.
Exactly like how Dr. <PERSON> was. Minus the mind-reading and future-sight, of course. 209