Not only does the bad tutorial have an in-universe justification; the ways in which it is bad are actually significant to the worldbuilding in multiple ways.

The missing information also encourages positive interactions among the community - newer players are expected to be missing lots of key information, so teaching them is a natural and encouraged element of gameplay.

I stopped playing the game awhile ago, but the tutorial always struck me as really clever.

I also think that the tutorial would be tedious if it went through too much of the mechanics. They show you the basics, the rest you pick up through trial and error.

The tutorial is just fine - here's a gun, here's how you shoot it, here's how you call reinforcements, now go kill some bugs!