Oi... Yes, this is Yahtzee's sickly voice. Such as is what happens when you have to put out a video every week without fail. As someone pointed out, you can compare it to his Heavenly Sword video, where he writes at the end that it was co-authored by a bottle of cough syrup. It's not a permanent format change unless he's got the plague, and it's not new audio equipment unless said equipment is shoved squarely up his nose. We'll have nasally Yahtzee back when the power of his hat purges the germs from its symbiotic host.
Anyham, in an effort to sound constructive: Good review, as per usual.