Well, we're a good month into the new season and in my opinion, it's kinda obvious that Blake Griffin has retired. No, he hasn't announced it, but perhaps that is the best way to do it. Just simply walk away with no fanfare, no formal announcement, no hoopla ... just get on with his life and leave it all behind. In a way, it's a fairly classy way to exit.
If I had the chance, I'd thank him for a dozen years of entertaining play and wish him well.