I don’t hate Kindle Unlimited.
While all my own books are currently wide, I also work on marketing campaigns for others which regularly get 10m reads per month, or more. I’m not saying that to brag — the respective authors are doing the hardest part of the equation by writing books which resonate so widely — I merely state this to show that I understand how to (ethically) work Kindle Unlimited, and that I have nothing against it per se.
Such caveats are necessary as Kindle Unlimited elicits strong feelings — and it’s not just down to self-interest. Some authors object to exclusivity on principle and refuse to enroll. Others are concerned with the compensation model or the market as a whole.