Learn your chords, hK ... he obviously knows them well and is working most of his lines/licks around the chords he's using. Lines, licks, riffs, solos, lead, improv, melody ... they all come from chords, which come from scales. Knowing chords
really well is a much quicker way to get there than learning endless scales, since the chords have already sifted out the lesser notes for that point in time. What I call 'The Chord Of The Moment' is what I follow when I play ... it rules the roost.
However, having said that, there are two schools of thought and the biggest will tell you to learn scales. But, I can see and hear that this guy is basing what he does off the chords, not scales, so if you like the sound of it, get to know as much as you can about chords.
Have a look at the
CAGED lesson for some insight.
Here's a movie of me playing a 12 bar thinking 'Chord of the Moment' rather than 'scale' ... just to show you how it sounds: