HypersomniacLive: What is provided there does not answer the question, and I'd say it's hardly relevant; the only thing it does is provide info about the available download options in general.
Were the info about the existence of two sets of standalone installers, which of the two each option provides by default and how to download the Galaxy-free ones when choosing the "Browser downloads" option provided, then the page would indeed be relevant, and drmike's post #42 would stand, for both new and old users.
As it is, the actual relevant info can only be found in the forum thread the Galaxy-laden installers were announced, a thread well buried now; customers are not obliged and should not be expected to scour the forum in hope to find info that should be readily available to them.
I can only totally agree.
But it is a mere symptom, in my opinion the problem is the shift of GOG itself on its principles, morals and goals.
And the majority of the current user base does not care about those things, it just wants to consume games. Maybe they understood does DRM is bad for them but didn't recognized (yet) it is only one of many customer unfriendly industry practices.
Even the last initial principle of beeing DRM free is being bent and attacked constantly by the adoption of current gaming and its practices.
The lock in effect does exist @ GOG just as it does exist @ steam and thus i can only warn everyone feeling too comfortable, as your "DRM free" that makes you feel so safe and good is not much worth if you have games that rely on active support and services.
And a shoehorned in singleplayer mode for a game that is clearly designed around online services is usually a laughable attempt to make it DRM free.