非谓语动词做定语的问题

But some observers are skeptical, "There is a kind of false precision being hawked by people claiming they are doing ancestry testing," says Trey Duster, a New York University sociologist.

请问老师，上述句子中为何要用being hawked做precision的定语？不可以直接用hawked吗，这已经表示被动了呀，为何要加being呢

hawk 为及物动词，在此由沿街叫卖转意为兜售、散播。用目前分词被动语态作定语，即表示被动意义，也表示进行体意义，即现阶段这种被动事件不断在发生。