This question is the first I have heard of Kobold Fight Club, so I don't have much of an opinion about it. My opinion would be that I need to learn more about it. When I tried to research more about it, there was little information I could find.
From what I did find, I see it is apart of the game Dungeons & Dragons. This is why I don't know much about it because i don't play many games. Yet, many of the gamers see Kobold Fight Club as a useful tool, which helps them when they have an encounter.
I am a gamer, but I have not tried Kobold Fight Club before. Based on what I have heard about this, this allows rough encounters to be balanced well. This can be used for the RPG game, Dungeons, and Dragons. There are a lot of Dragon masters who use this as a tool so that they can have more smoother and balanced combat that will help them win better.
There are a lot of customizations that are also available, so players will likely be able to create the ones that they need. This can also be used by those who feel that their random encounters are stale.