>>8617858He's not entirely wrong - the joints are definitely really loose. However, the range of articulation is actually really good for such a bulky figure, so if you just stiffen up the joints a bit, he's fine. I did find that he pretty much wouldn't stand on his own with the base amount of joint friction in the model, though.
For my part, I just stuffed some strips of paper towel in his ankles, elbows, hips, and knees, and that gave him enough friction to stand up properly and hold a solid range of poses. I bet blu tack would work even better.
Not sure why that guy is sperging out so hard, it's a really easy fix and plenty of actually Lego-endorsed models have similar problems. Just look at some of the dark hunters, or melding teridax.