> The practical check is the one the data endorses: when a knife recommendation comes from an account you do not recognize, click through and see whether it has ever named a different brand.

This isn't even most of the times possible, since both humans and bot alike on Reddit now hides their comment/submission history, so it just shows a blank page.

No, I think it's best to just default to assuming everyone is a bot, so to say, and read everything critically regardless of what the source may be.