Because the game was under development for more than 8 years. And there are also many statements of Armagan where they were planning to "release" when they are ready. Also, Early-access doesn't mean DevBuild. EA is also a form of release and that's why the main release is called "Full release". And if you promise the following on your web page then people will expect "wealth of content that will keep players engaged for many hours"
If you are okay with all these bugs and weirdness after 8 years of development, sure, go ahead and be the tester after paying AAA price.
However, you being okay with this won't keep me away from stating my mind in the forum. Especially while game's active users are on decline.
According to your logic, we shouldn't say anything because it's EA. Also it's not clear that game will be in full release after a year. That's just your assumption. Regardless to that, I think you are missing the argument here but I won't bother to argue anyway.