I suspect it is a huge mistake to think of the later periods of Impulse free and spiritual jazz to be as confusing or inaccessible to young ears the way it was to many of our generation. This music has now been fully absorbed into so many genres over the past decades in just the same way Stockhausen, Cage, Riley, Reich, Glass etc have been in everything from film music to club culture. If one views the recent rebirth of jazz by young musicians, e.g. the current scenes in London, New York etc, they are clearly hugely influenced by Alice Coltrane, Pharoah Sanders, late-period Coltrane, Albert Ayler etc. This stuff runs through it just as strongly as the ‘70s soul-jazz/funk groove thing (electric Miles, CTI, George Duke etc). I’m sure there is a market for this stuff now. Anyone who likes Shabaka Hutchings, Makaya McCraven, Kamasi Washington etc will feel right at home with Sanders, Alice, electric Miles etc. I’m convinced this stuff is ‘now’ in the same way my generation mined the Velvet Underground, Stockhausen, early Krautrock etc for inspiration.