I like Daveyham's pub analogy. I don't know about you, but my bookmarks bar is bristling with sites and if I tried to visit them all regularly I would turn into vegetable matter. I'm more likely to visit sites that are busy, and RCR has suffered a recent downturn in that respect. I think the monthly password reset had a lot to do with it, but that has been fixed and it now rotates on a twice-yearly basis, so time will tell whether the active membership picks up.
Personally, I visit the sites for different reasons: I view this site as a trail-blazing R&D lab where there is a lot of passion and opinion; RCR has more of a reference function. I can't comment about the rights and wrongs of who should be publishing what because I just don't know.
In my opinion both sites are good.
Any website will eventually die if it isn't monetized. This site and RCR employ different models, but surely that just gives us more choice? We can choose to browse for free with ads, or pay a sub. No-one is forced to belong to either site, after all.
Cheers,
Tim