Sounds like they did the best they could with the situation, since it was beyond their control (Deep Silver, as the publisher, would have made the decision to partner with Epic most likely). They said they tried to work out a deal with Epic to allow backers to get the Steam key they were promised at release, but that the situation became untenable. At least you have the option of a refund now, or you can get the Epic version now and a free Steam key a year later.

Glad to hear that with the Deep Silver and Epic money that they were able to implement most of the stretch goals that the initial crowdfunding campaign was unable to reach, seems like it will be be a pretty big game, Yu insinuates here that it's larger than Shenmue 2 now.