The game is currently at version 0.207.2. The reason it feels shallow for some, is because it's 8 major content updates from official release. Recently Mountain Caves and a bunch of stuff were added, along with bug fixes and QOL revisions. The news will tell you this.

Mistlands is currently in development.

I don't think other people telling you their experiences will do much for personal feelings. Some will say they have 1,000+ hours and is still loving the game. Some will scream bloody murder and say the devs have abandoned the game, even though the game received 26 updates last year, but people whining look solely at content additions and not actual coding as progress.

Ultimately, if you have other games to play, continue with those first and come back when the game is nearing version 1.0 or already released out of Early Access. That way, you're not inching into its development cycle waiting for new stuff to appear.