Honestly, someone who suggests that you stay away from a mouse and look for one with a "sniper button" if you play a sniping role in competitive esports does not have a place in reviewing mice. That single line invalidates everything else said in the review because I simply cannot trust that anything else is true or accurate when the writer of the review is clearly just that, a writer, not an esports player/enthusiast.
A guide is a person capable of guiding based on knowledge built off experience. I truly hope you don't actually see yourself in the role of which you assume.