I think its an issue these days as people think an Alpha build of something, and a pre-release version of something, are similar things. But they aren't.
In the software industry Alpha has always meant that the piece of software (or operating system for that matter), is more than just buggy, its more likely to crash and burn, more likely to do stuff you didnt intend when hitting 'button z', and is full of missing features etc etc.
Whereas pre-release basically means its either Beta or Gold, i.e. almost the finished product. So a user can expect the game to be playable with most issues and bugs already handled.
As you can see there is a huge gap between the two levels.
Have a look at some of NQ's vids on the YouTubes to get some idea of game progress, and the word here is progress - not finished game.
So cheer up, as you can see whats been achieved so far does look good
And you can play it now. For me Im waiting for Alpha 1 to be release within the next week or two, which is the level I subscribed into. Its going to be a fun adventure