Forward scattering is not equivalent to no scattering; in fact, the optical theorem relates forward scattering directly to total extinction, and specific beam configurations can even result in zero forward scattering while extinction remains strong.
The claim states that forward scattering is equivalent to no scattering. Physics literature on the optical theorem (e.g., Papers [3] and [10]) establishes that forward scattering is actually a distinct measure related to total extinction, and that objects can have zero forward scattering while still scattering and absorbing significantly overall (extinction). Thus, the claim is factually refuted by established scattering theory and optical theorems.