Earlier quoted context omitted.
Yeah which explains that duck tape is not for ducts (or pipes) since it's made of fabric. > She is often misattributed as the inventor of duct tape. However, numerous variations of adhesive cotton duck tape had existed for decades, nor did she invent the specific formulation of the popularized duct tape.
That is not what the thing you quoted says, or even correct. All duct tape is made of fabric and it is… well duct tape, so ducts were the intended use case when the name was created. Duct tape has kinda become a general term for all cloth-based tapes though, so you can indeed find duct tape not intended for ducts, but the fact the name was originally “duck tape” has nothing to do with that.
The part I quoted says that duck tape is made of cloth and therefore is not duct tape.
I think people get confused because there is a brand of duct tape named Duck Tape. But even the Duck Tape packaging calls it a "duct tape".