Yeah, I got a little carried away ranting. It's probably reasonable to make sure your page works if GA doesn't load. There may be other third-party scripts that the developer views as essential but the user doesn't.
I found this searching for "google analytics stub": http://ejohn.org/blog/fixing-google-analytics-for-ghostery/ . Supposedly Ghostery was already stubbing it in 2013. They might be missing some stubs for certain scripts though, because I've had something break 6-8 weeks ago, and it worked when I disabled Ghostery and refreshed.
I found this searching for "google analytics stub": http://ejohn.org/blog/fixing-google-analytics-for-ghostery/ . Supposedly Ghostery was already stubbing it in 2013. They might be missing some stubs for certain scripts though, because I've had something break 6-8 weeks ago, and it worked when I disabled Ghostery and refreshed.