Bresna, I am with you on this issue. The number of fine jazz musicians over the years who emulated others is very lengthy.
There was a time when a long list of alto players were accused of being too much under the spell of Charlie Parker. Similar accusations were aimed at Paul Quinichette for sounding too much like Lester Young. And the list goes on and on.
By the way, if you listen to a variety of Eric Alexander's recordings you can hear a wide range of influences from George Coleman, John Coltrane, Dexter Gordon and others. Yet he does not sound at all like any one of them. In fact his influences are far less dominant than the single Pres influence on Quinichette.