Eco is in Early Access on Steam since February 2018, before it was only available in Alpha to buyers on our website and before that as an even earlier version only for buyers on kickstarter.
I think that Eco is in a very playable state, it definitely misses some more endgame content, though. In regards to bugs I can't really agree with you, there is a lot of them left and there is still some major things that need to be tackled, like the ominous performance and "why is my stuff invisible" issues that do not appear for everyone, can barely be safely reproduced (especially for the last one, which no dev can reproduce at all) or need a lot of time to be fixed as basically everything needs to be reworked over time (performance issues, or what people call 'the memory leak')
Hence in total I think it's right where it currently is.
And while that is, we can implement more of what we want to see in Eco from our Eco Tree, though the Eco Tree is not meant as a roadmap...
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