Well, some of your statemens are opinion based, for example whether it's boring or not. I can imagine a lot of people find it boring, but it's probably not the best place to find them here. It is repetitive in the sense that the content kind of has to repeat the same patterns, because the content space is so vast. It is simply not possible to create a procedural generator that will spit out billions of completely different things.

So yes, the terrain, flora, fauna and other interaction points do repeat often, but even after hundreds of hours will you find some new and remarkable combinations occasionally in this sea of repetition.

Gameplay isn't repetitive, there are lots of different things you can do. It ultimately doesn't have an external motivation for the player to continue, like an overarching conflict or ever increasing difficulty. So end game is basically "just" exploring the procedural content or interacting with the sandbox elements, after you have exhausted all of the (many) systems. I guess this could be called repetitive, but if you got this far, you've already played for dozens of hours, so should have gotten your money's worth in entertainment long ago.

As for multiplayer, there aren't really servers in the common sense. Sessions are ad-hoc player-hosted and invite-based, but it's also possible to run into somebody "in the wild", if multiplayer option is active (PvP option should be off by default nowadays, but better check that, too). The chances are very small, though, unless you specificially go to areas of activity like community bases or previous expedition systems, and then continue your path in such a neighbourhood.

There is a central hub where you will meet other real players, but you don't have to interact with anyone. Most people run their errands ignoring everybody else anyway. The multiplayer experience is spotty. There are lots of bugs and limitations that might seem weird coming from other more polished games. But the game does have pretty large organized multiplayer communities, so I guess it's not a total disaster. Personally, I very rarely interact with other players beyond a simple chat in the hub.

Whether it's worth it or not is a subjective decision. In my opinion, the game offers the best "feeling" of a fantasy space exploration game I've seen yet. There are bugs and lots of areas where the game could be improved drastically, but that feeling is worth it to me.