You have to give the Backers something that no one else can get. If not, what's the thank you for help back a project?
A kickstater isn't a pre-order. I'm fairly certain that you're not guaranteed anything. They have to thank the people that took a chance.
I'll call it a "good faith" preorder. Because when they back the game, it's in the hopes that they will receive a copy of said game once it's finished. I don't think anyone who backs a game expects zip in return.
And on the main point, the goodies are the "thank you" for the backers. Regardless if you were a second wave backer, you backed the project. These people were expecting the same goodies/items/bonuses. No differentiation was made saying only the original backers would get the goods. They decided to do a survey and even after the majority said "slacker backers" should get the bonuses, they pulled it anyway. That's pure, grade-A bullshit. It is no different than if Iga had listed in the campaign that everyone who backs x-amount of dollars will receive a premium steelbook, then turned around and decided only the first 1000 backers would receive the steelbook. It's a big FU to people who took a chance on a project, all rightfully assuming they would get the bonuses.
That's why I'll say again, if you make a good game that is worth my money, I'll buy it. Too many people are getting screwed one way or another and I'm sorry, but with my wife out on disability, we lost a huge chunk of our income and I have to take care of my family. I buy a lot of games, but I don't have money to gamble on vaporware.
PS...I will be buying
two copies of Iga's Bloodstained. One for my PS4, one for my Vita. Because I want to play it on both, Iga makes awesome games and I'm going to support him.