Do you think you are spoiling some of this for yourself?
I've thought about this a bit and I don't think so. The logic behind that may me unique to me though. For now, I am merely following the development and dipping my toe into the content every once in a while. So even with the limited percentage of overall release content in the game now, I still have plenty to discover.
Now this may change in a month or so. Right now the PU is mostly devoid of content. It's a very basic framework that is set up like a fence around a construction site. We can run around and move dirt, but nothing is really built yet. We can see some indication of what is coming. We can look at the blueprints, but it's still just a dirt lot. 3.0 might actually be the first time we actually see what the game is going to be like. So I guess at the moment, it's hard to really gauge if we are ruining our future enjoyment. Because really, when it all boils down to it, we have yet to actually see or play the game.
That being said, I vividly remember the first time I logged into the game and stepped out onto the port olisar landing platform for the first time. In those first few seconds, I knew this game was going to be a thing. I have been playing video games since the early 80's and there have been very few gaming moments that were so profoundly awe inspiring.
I am glad I experienced that now, in alpha, instead of later on release. That's because on release, it won't be peaceful. It's won't have the same feeling of grandeur. It won't inspire a feeling that you have just taken your first step into an infinitely vast universe. That's because when the game is released, you will step out and see a caterpillar and two terrapins cleverly positioned and floating above the dock so they look like a dick and balls...
I suspect there are at least a few more moments in store before the actual release. At least, I hope there will be. I have high hopes for 3.0 and the first time I land on a planet. That said, no matter what moments the next few years hold, none will hold a candle to playing the completed game during those first months of release and actually being out in the verse with millions of other players.