I strongly advise against buying it now in its current state. There isn't nearly as much content as Rust or 7D2D in this game. There's really not much content in this game except for needless arbitrary grinding to gatekeep you from plowing through it in the (maybe) 240 minutes worth of content there actually is. I put 70ish hours in and I'd wager a solid 40-50 of those hours were spent grinding materials to progress to the next boss. 15-20 of those hours were for setting up my base and the ~5 hours leftover was the actual content.

The "abandoned" rumors are wrong but the devs drastically slowed their development progress after they got a huge cash infusion from the hype train last year. Last year there were supposed to be 4 content updates and the devs ended up only pushing out one smaller one because they seemingly took a lot of vacations with their newfound wealth.