That was not me playing, just a link that I had bookmarked a few months ago because I knew you would be coming here with this question. ;-)
I do play just like that though. In my dreams.
And yes, you will probably want to loosen the truss rod 1/4 turn or so.
Lol. Either way that’s good music.
My Smith has been inspiring me to take my practice more seriously over the time I’ve had it.