The OP article contains a video of a performance by Emmet Cohen (who was born many decades after the 50s) doing a complicated solo based on stride piano techniques.
PS In your other comment you blame bebop for this, but I don't think that contemporary jazz is necessarily all in the shadow of bebop, I think it is actually very diverse, with so many genres that are not necessarily close to bebop such as neo-swing and funk-jazz.
PS In your other comment you blame bebop for this, but I don't think that contemporary jazz is necessarily all in the shadow of bebop, I think it is actually very diverse, with so many genres that are not necessarily close to bebop such as neo-swing and funk-jazz.