Also very important is that contrary to all of the lovey dovey lets get along on the Internet propaganda being spread around now, his "being an asshole" by insisting things be done right is being revealed to be incredibly valuable. While pro and anti systemd camps debate trolling Theo and the OpenBSD team are doing the important work of making existing tools better.
Already jsut cleaning up the OpenSSL codebase to birth LibreSSL has resulted in code that in its few months of life has avoided some new security advisories the parent OpenSSL is vulnerable to.
Theo's accomplishments are not limited to merely making an SSL implementation that is less of a turd. It is that he managed to grow a community of capable programmers that can and does make essential utilities less shitty.