Personally, I think it's MORE "jazz" (musically and emotionally) than 90% (at least!) of what passes for jazz these days , but on that I hope we can respectfully disagree. Myself, I'll take Marvin Gaye over Kurt Elling any day of the week (and twice on Sunday!). Now, that's not to say that Marvin was informed by bebop, but jazz is so much more than bebop. Marvin was DEEPLY influenced by Billie Holliday, and to me, it shows pretty clearly in a tune like the one included (if that in fact IS Marvin... ). But this matter should probably best be left for the Post-Answer-Revealing thread, which will be around early next week.
This is indeed Organissimo, not Soul-issimo, but "organ jazz" and/or "soul jazz" would not be what it is today without Marvin Gaye (that phrasing, that nuance, that depth of feeling!) and James Brown (those grooves!). There's good reasons why those genres of jazz stayed popular when nearly all others struggled, and the influence of people like Gaye & JB (musically and culturally) are prime among them.