They rely on surveys and let's face it, someone could rate the ram reliability as low if they have a pet peeve about cup holders and just want to get back at Dodge. Active forums like this one are far better for information gathering than surveys.
Surveys benefit companies and services, not consumers. This must be why CR doesn't have forums on their site...can you imagine if they did?
And regarding their mission of being agnostic, one look at their web site and you can see that they have 'CR Deals', hand picked by their 'experts' on 'Top rated' products, so yes, I would say that is a conflict of interest.
Full disclosure, I used CR some 5 years ago to help me in my purchasing decision for new refrigerator, washer/dryer, microwave, stove, vacuum, mattress and pots/pans. The refrigerator, washer, microwave, mattress and a couple of pots all had issues and these were the top rated and in some cases expensive and needed replacing. I should have cross reviewed the items using Best Buy, Amazon, Home Depot and for those verified accounts, invariably the items I choose were not highly regarded. That's on me.
CR was useful back in the day when newspapers and magazines were the only sources of info or if you don't want to bother culling thru Amazon/Big Box reviews.
By the way, the items I replaced were all low rated on CR or not reviewed and they've been great.