Being able to play it doesnt mean anything.
Yes, of course eventually you figure it out, like you said this isnt rocket science, but you shouldnt need to figure it out, that is why games have Tutorials and Walkthroughs.
You are probably too young, but games used to come with Manuals of hundreds of pages, explaining every single thing you could do on them.
This evolved in Tutorials.
Refusing to provide any kind of tutorial is a mistake.
And yes, i whine a lot about this, because its a stupid decision made by the Dev, and as a fan of games like Privateer, Freelancer or Starpoint and after getting engaged by the great Prologue and the very nice story, i wanted to like this game, untill i had to face the game itself.
Sure, i eventually realized that gold stars were main story quest, diamond stars repeatable events, silver stars character progression events, etc, and even after i figured that out i missed quests.
And dont even try to justify a quest log that only has Quest A, B, C, etc without any descriptions on it....