I'm not a crypto expert but I think the answer is exactly the opposite, Satoshi chose to give out less information than he could have.
To use PGP encryption you publish a public key that anyone can use to send a message that only you can read. Typically your public key is available to everyone in the world, including the NSA, from a public keyserver. This is convenient, someone dosn't have to email you and say "Hey guy, I need your public key to send you a private email".
The NSA might have spent the last 17 years cracking my old 384bit public key to read a couple of email replies I got in 1994 saying "Re: can I sleep on your floor after the 2600 meet? Yeah dude bring a sleeping bag".
A bitcoin address is a hash of a hash of an ECSDA public key. That is just as identifying as the public key, or a non-existent "account number" since it is unique to the person receiving the money.
There is loads of money sitting in the bitcoin block chain. To take the money from an address you just have to provide a number that meets certain conditions. The whole thing rests on it being really really difficult to find a number that meets the conditions if you don't have the private key that was produced along with the bitcoin address.
Satoshi could have just had the bitcoin software publish the public key. That would mean that if someone dosn't spend some bitcons for 15 years an attacker has 15 years to try to crack the ECSDA crypto. That should have an insignificantly tiny chance of success but there is no harm in making it more difficult.
In theory the hashing means that there are more possible numbers which satisfy the condition to get the money. That should reduce the cracking time from a 1000 zillion years to only a zillion years, which dosn't matter. In practice it means an attacker has to crack ECSDA plus two hashing algoristhm instead of just ECSDA so it's probably more difficult in practice.