As I am not a paid member of Choice I can't see the results of the "member content only" but are you able to access it? If not perhaps you may need to contact Choice about the issue.
I am only guessing but I assume they will publish a selection of what is made available online as the size of the magazine would probably need to expand dramatically and be uneconomical to produce to include it all.
The benefit of providing it online to their members is that as a member you get a lot of ways to compare and evaluate your preferred choices rather than the very limited interactivity you would get with the fixed printed word of a magazine. I do realise some do not have the benefit of the internet to use as a tool in their decision making and the magazine may not address all their needs adequately. I don't know how Choice could fix this for their members but I really don't think this is bait advertising of members as I understand that the entire data is made available to members, and if not a member it gives the option of joining to avail one's self of it.