In this code:

<?php

abstract class A
{
  /**
   * @deprecated since version 1.0
   **/
   abstract public function a();
}

class B extends A
{
   public function a() {
     echo 'hello world';
   }
}

Netbeans will detect A::a() as deprecated, but not the (reasonably) deprecated child method B::a(). I don't think this boils down to opinion, extending / implementing a deprecated method should result in a deprecated method by proxy.