This is an excellent question about who identified the Bruce Lee as a JDM. When I first searched about his 6010, I came across that picture, which you included in your original post, from a few different sources. Do we know who initially created that picture? The JDM shown in the lower left has the same bracelet as Lee's initial May '69 Stelux-Kreisler, but it is not his wrist. Hopefully, your commemorative magazine will provide color pictures as well. There is definitely a color picture out there of him that can identify the watch, he's in an office looking down at a contract on a desk (or it may well be a book, script, or some other document).
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I haven't seen the ESPN 30 for 30 on Bruce Lee yet because it has not broadcast in my part of the world. I have seen the trailer, so I know the documentary contains the famous "Be Water" interview with Pierre Berton on December 9 '71. His watch's bracelet was always just covered up by his jacket sleeve and I could not identify if it was the elongated oval or 8020 rally. If it was the oval Stelux/Kreisler, it might be the last appearance of it on his wrist.