Notice the soldered RAM and lack of video card? Kinda like what the M series does.
And when all is said and done, 8gb is not nearly enough and apple should be chastised for just like Nvidia when they first decided to make 5 different variations of the 1060 making sure 4 of those variations will become ewaste in a few short years and again with the 3050 6gb vs 3050 8gb