That's up to interpretation. The term 'Early Access' itself hint at getting early access to a game before its released/finished, CIG even said it on their website, its a special privilage to play their ALPHA. CIG is doing their best to not mention 'release' on their website so the definition and what it implies has be argued out in court, and most people don't want to burn their money doing that.
There is very little to interpretation of what is a release/launch. Early access is simply tagging a release/launch with a warning that the product may have more defects or more missing items than expected and that the developer has an intent to improve it with no guarantees, that is all. But otherwise there is no difference. CIG has mentioned SC is released already many times. They are just trying to obfuscate that to the market by using vague terms such as "alpha" on top.
It´s quite simple actually. What is a game or product that is being sold if it is not released? There is essentially only 2 options: It is either in a crowdfund or pre order state. Those 2 states are very easily recognized because of their accounting and financial implications and certain obligations. Deferred revenue and refunds no questions asked, among other differences. In the case of crowdfunding the developer usually has the obligation to use all funds for the development of the crowdfunded product aswell. The fact CIG is for exemple issuing dividends and disputing refunds, or likely using funds to acquire Turbulent, plus their own explicit statements that the game is released, indicate SC is officially launched already.
Let´s not confuse launched/released with completed.
Now, is the released product conforming to all representation made of the product at point of sale throughout the years? Probably not. And that, my friend, is a different story. One for which many sellers have been indicted.