The rankings have always been fucke , for this very reason. The people who do them have no requirements, and as the reddit user points out, they have extremely disproportionate power.
I've always thought they should just use the formulaic ranking system used by Fight Matrix.
I understand why the UFC doesn't use it (they want to retain power), but I think it's a mistake. Legitimate rankings, that are objective, would help return some order to the sport, and give people a much clearer path to the top of divisions. It'd give fans a much better idea about what potential match ups should be, as it'd be much easier to actually plot a path through the division.
Fighters and fans would win, the UFC would lose a little power, but I think it's be ultimately better for the sport, therefore better for the UFC.