I agree that "Early Access", or other forms of paid alpha/beta, have become far too common and prominent and developers have started to rely way too heavily on them. That's not really related to Kickstarter at all, though - nothing requires you to give alpha/beta access just because you sold your game through Kickstarter. You can do whatever you want.
Kickstarter is an amazing way to sell games - you get more than 90% of the revenue (compared to 70% with Steam), tons of people are willing to pay far more than normal purchase price, and you get all this money as basically a zero-interest advance loan on top of it. If you don't expect developers to continue using Kickstarter left and right, then you're kind of nuts.
