Even though they offer refunds, I still can't get over it. This is such a scummy move. You turn to crowdfunding to create your game. People believe in your project and they back you up. You gain their trust. Years later you're done and about to release the game and a store front approaches you for an exclusivity deal. You then take the time to assess their offer, calculate how much it would cost you in sells on steam plus the backers you'll need to refund, go with it anyway because profit and break any bound there was with the fans for the past few years, the ones who kept reading any possible update regarding the game, etc. Sure, there are some fans who won't care and simply will accept the Epic key instead but I feel like this is a treason for all the folks who disagree with all of this.
"Hey we'll make more money if we follow path B from now on. Oh well lol"