It's an early access game, all of us bought is as early access knowing what it meant to buy early access. I wanted to support the company and for like 30€ it wasn't a horribly expensive game. For AAA you pay 60 + DLCs which then sums up to 100-120€ or something like that.
(if you feel like paying that. I usually don't, so I mostly pirate to check games out for a few hours and buy on sale only 90% of the time)
If some dude feels ripped off because he didn't compare prices, well too bad. And he shouldn't cry because he doesn't know that early access means bugs and constant patches and changes in gameplay. That's not the companies fault, that's part of the whole thing you bought into. Money doesn't grow on trees and probably they released the game to not let everyone hang in the air for another 8 Years and also to get financing to actually finish it in a decent fashion + to get player feedback to improve it. Because the community is what keeps a game alive.
If a developer runs the game into a wall and/or abandons it, you have a right to ***** about them. Or if they scam you with false promises and run off. But that's not the case here.