I wholly agree and even in the case of the imps and intellect devourers there is no reason they cannot be included with the correct lore. This is simply creative laziness. I will explain:
They could easily have you fighting injured and or crippled enemies for your tutorial engagements. For example they could be debilitated from their previous fight. The Ship itself could be debilitating them somehow. A Nautaloid could be debilitating them and ends up bleeding out as soon as you finish combat.
There are so many things they can do to address this. These things would be easy to do and would not require much, do not attribute their disregard for this due to restraints, as that's simply untrue. The fact that they are disregarding the monsters so much is truly a sad thing to see.
