Yes. Even more important, he was closely associated with Carmine Galante in the heroin rackets.
There's an example of how and why the Commission acts. Galante strutted, bragged he was going to make Gambino "sh*t in the street," acted as if he were the Bonnano's boss--all of which annoyed other mobsters. But his unpardonable offense was to set up a heroin pipeline to Europe and not let the other families share in it. Goodbye, Lilo.