Just in case you (apparently) didn't know.

well... how big was it? like 17mb?

just a little ninjapatch. they probably start putting in some files before bringing a real patch to make it a bit smaller

It's not just this one. They've neglected Steam patch notes for some time now. It's like they forgot how to do it. I can tell you first hand it's not even hard! It's just a couple of clicks and a copy/paste.