Bioaccumulation is the issue, which is not diminished by name calling.

Toxic chemicals don't care about labels.

Spraying tons of poison from helicopters, whether military or civilian, poisons life downwind.

The increase of childhood cancers and birth defects is a good reason to prohibit this poisoning.

There wasn't really any difference in biological impacts between 2,4-dichlorophenoxyacetic acid and 2,4,5-trichlorophenoxyacetic acid.  My condolences to the US veterans and the Vietnamese.