What is a harsh comment (and an annoying trend among all the "I got on Product Hunt: look at me!" posts) is that you encourage vote cheating ("It is perfectly fine, however, to promote your Product Hunt page on your groups, forums, internal communications, etc. Introduce your community to the featuring on ProductHunt, but don’t encourage them to vote one way or another.") because it isn't explicitly against the rules, but you don't realize why that's a bad and unethical thing to do.
Let's just say that 6 years ago when I launched on TC, the traffic numbers were much higher.
I'm puzzled by the idea that setting up an ad hoc voting ring (apparently with careful planning, as per the description on how to maximize the quality of the fraudulent clicks) is somehow not gaming the system.