Indeed, Gold Bond powders do use cornstarch instead of, as do most others produced in the US (Odor Eaters, for instance).

Coincidentally, just last week I researched talc to see if it is still used to prevent pests in packaged rice. The search revealed a number of things:

It's no longer used in rice in the United but is still common elsewhere

Talc deposits are often found coexisting with a form of fibrous asbestos
which is dangerous to inhale..

however, since 1976 in the US inspection standards were established
which have eliminated this danger

The International something-or-other Cancer Risk rating of talc alone
is Class 2b, which is the same rating given coffee and cellphones

The American Journal of Clinical Nutrition finds no risk in talc
consumption Talc-coated rice as a risk factor for stomach cancer.

rs,
Tack