the intellectdevourers have obviously been nerfed.

this is not a monster usually fought at level 1, they exist thee because the narrative requires them to be there.
Now this is a point of contention for many DnD players because... eh, i dsay its more of an internal debate.

Some people think that monsters statblocks shouldnt be changed for world consistency. Other people are willing to change monsters statblocks because of narrative reasons.
Having played 4e, im not miffed by this because 4e regulary had multple difficulty levels of the same enemy, ofthen representing yougn / injured versions