There never has, and there never will be a strict definition of "jazz". Wynton has attempted to say, this is jazz, but that is not jazz; it won't work.*****
Wynton speaks truth. Don't like it, too bad.
While what was presented is a good example of "New Orleans Jazz", it does not stand up for repeated listens in my opinion; it was dated when I was born, and that was a long time ago.*****
Other 'dated' music / musicians:
Bach, Mozart, Beethoven, Ellington, Mingus, Bolden, Armstrong, Miles, Elvis, Trane, Morgan, Sinatra, Adderley, Motown, etc......... you get the drift.
You seem to like 'improvised music', if it can be called music, but not Jazz. Jazz is not a throw-a-way music. It never gets old or dated.
And music played by a guy in clown clothing, playing tunes with third world names, does not make it good music, in fact, most often the opposite is true. Music is music and noise is noise.
As the good book says:
No Blues, No Jazz. Know Blues, Know Jazz.