I LOVE that Summer Solstice album. I had a similar reaction to it that I had when I recently listened to
Lonnie Liston Smith's Astral Traveling reissue from Real Gone Music (which on a side note has put out some fantastic classic Christmas music this year). That I have a lot of awesome jazz underbelly to explore.
For better or worse, I think jazz, more than most genres, views music through the lens of its idols. The classic Blue Note performers and other revered giants are the measuring stick for every era and flavor of jazz. To me it's a limiting effect of the genre, that new performers always have the idols lurking behind their shoulders and older (non-idol) performers are judged on who they worked with.
Think about when a new rock artist comes along. Are they comped against giants like The Beatles, The Stones, Led Zeppelin, etc. before they get their cred? Did they have to play with Eric Clapton or Bob Dylan to get some critical acclaim for their own project or sound? I don't think so -- they're free to do their own thing and create music on their own merits.
But if an Azar Lawrence blends in some Latin or a Lonnie Listen Smith goes avant-garde, it doesn't fit into the classic jazz aesthetic so it's not going to get worshiped with the same reverence.
I think we're all guilty of perhaps over-listening to the classics. I know I get in cycles where I'm hopping from Lee Morgan to Grant Green to Art Blakey to Bill Evans to [insert classic artist] and staying on that merry-go-round. But lately I've shelved the classics and am exploring other artists from the '70s-forward, forgetting about the classic genre rules and pigeonholes, and letting them breathe on their own. It's been fun for sure.