To me it looks pretty clear that it's there - from his flashlight only - and it's the enhanced version of the flashlight GI bounce effect they already had in TLOU on PS3. Why would they retread from that?
That's not Global Illumination though. That's an effect of lighting up more than just the flashlights direct light path. Global Illumination is more than that. Plus the light radius on that flash light is huge and I think what he's seeing and calling Global Illumination is just the out edges of the light radius of that flashlight. In some cases there seems to be some light bounce, but that's not all GI is. Call it a Global illumination like effect. Don't call it GI.
TLoU has a GI like effect, it doesn't have GI.
The effect pretty clearly is there, even if it's not 100% anatomically correct. The adam's apple movement is also there as they talk to each other.
Words mean things, and if you say they have it moving anatomically correct and it isn't then you're wrong. I just watched it again, to me, it feels more like good deformation than an anatomically correct movement. Which is great it's awesome to see better deformation on video game characters. I wouldn't call it anatomically correct though.
There's definitely a disconnect IMHO between the neck muscles and the head, things are deforming better than they have in the past, but the muscle isn't stretching and squashing the way it should. I'm only expecting that though because the guy claims its moving anatomically correct.
Its definitely really good deformations, and an improvement over past generations, that doesn't make it anatomically correct though, so don't claim that.
You realize many high end feature level rigs have muscle simulations going on, and are REALLY accurate anatomically in how skin moves on muscle and what's going on. That's NOT going on here. There are some fantastic deformations going on, and they've got it rigged to fake some really cool under skin activity, but its not doing a skin over muscle and bone simulation here.
You understand there are effects, and way of faking things, and then there's actually doing those things. You can't claim something is doing something when its not. That's not being technically accurate.
If you're going to do a video like that, and push that information you need to be technically accurate.