Glad you liked it! Modes can figure heavily into crafting out a solo and working out where to go with it and he talks it through nicely on that video I think.
Years ago I got the book, "The Ragas of North India" when I was getting going studying music. (it's been kind of a meandering effort from a "scholastic" view

). Still have it around, big honker, by Walter Kauffman. It was a very definitive study of HIndu ragas, their history and meanings and included 100's of notated examples of the short "scales" used.
In it there's some great descriptions that help (or start to anyway) to grasp the purpose behind the ragas that have been written in that folk music, most of it passed along by ear and in performance, rather than through written forms.
The raga is typically viewed from the Western disciplines as a scale, a melody pattern, but that's only part of it. Notes ascending and descending can be different and the "pattern" irregular if I'm expecting a straight up and down movement. Different notes have different importance and will be played louder than others. Some are struck directly, others slid into.
There's also significance to when they're played, some for morning, night, sunrise, sunset. Some have associations with animals, places, people, etc.
The "mood" aspect of ragas goes along with all of this, as they're more than a string of notes that make a melody, there's meaning assigned to them. I only really learned a few, and on guitar it's a commonly heard method that's often kind of hacked up, but it was a useful exercise for me at that time to investigate that music. I think in the same way, Western modal motifs can be studied and learned to the end they can inform our guitar music with meaning, some subtle, some not so.
I can think of modern examples that have become part of the musical vocabulary and are modal-like I think, like Hendrix's famous octave melody in "Third Stone from the Sun". That "scale" can be used in endless ways, mixed and matched and expounded on. It's simple, self-contained and invokes a mood all it's own. "Riffs" can end up populating our playing and get recycled, like the opener in the Stone's "Satisfaction" - who doesn't register an emotional response when hearing it? Even some of Chuck Berry's double stops and horn-riffs have become modal like - endlessly reusable and repeatable. We learn them as riffs and solo material, but in fact they do have a self-contained form all their own.
(yawwwwwn....kinda long there, sorry - wake me up when I time out)