first of all he's one of the very few guys on youtube i actually follow for a few years, and i'm not just subscribed to his channel. i like to watch his vids when i have the time. his interviews are fun too, the lukather one is a must watch for anyone interested in the life of a musician. i also wish i had his ear, his transcription skills are awesome too. he used to be a producer, he's a qualified musician and knows the industry from multiple angles (ex musician, ex producer, and he's also a music lover who instantly understands what he actually hears, just check one of his spotify top10 analysis)
anyway, my tl;dr point is that his opinion is the very definition of an educated guess when it comes to popular music. you don't have to agree with him, i often don't, it's just that he usually makes fair points