Is there anything strange about a 4096 bit GPG key?

Question

I noticed the GnuPG HowTo says "some people say you should have at a key-size of 2048 bits (which is also really a maximum with GnuPG at this moment)." Is there any reason besides computation time why this discourages key sizes above 2048 bits?

Answer 1

I didn't read it as discouraging. It says:

When security is a top priority and performance is less an issue you ought to pick the largest key-size available.

It also says "...key-size of 2048 bits (which is also really a maximum with GnuPG at this moment). ...", but that moment was in 2004, more than 7 years ago.