With the phrase "the most reliable" which is a phrase to mean the subject you're describing is inherently reliable. Meaning you can read the reviews on reddit differently than amazon, yelp, and the rest. If reddit reviews can't be read differently vs others, why "most reliable"?
You're trying to walk a line that says reddit not authoritative and yet reliable. In this specific context authoritative also comes to mean reliable. So we're at reddit is not reliable yet reliable?
I'm saying it can't be. The well has been poisoned and it's not safe to pray it didn't mix. That you need to treat reddit with the same skepticism lest you be taken for your money. Perhaps you don't agree, which is fair then we agree-disagree.
> "the most reliable" which is a phrase to mean the subject you're describing is inherently reliable
That's really not how superlative/comparative adjectives work