Hey friend you know the chemicals they make those things from are like WILDLY carconogenic right? And that PFAs and their cousins last forever and don't break down in the environment?

These chemicals are being banned because humans got too good at making super stable fuck-you-big molecules that just so happen to be wildly incompatible with anything that has DNA. These chemicals are literally everywhere with water treatment facilities having acceptable limits 2ppb or less. Yea, B, Billon. The thing with that amount though, is even THAT isn't safe, its just regulable. Here's an oversimplified video on the subject by Veritasium, the clickbait headline is just that. I believe this is also on nebula if you'd prefer to avoid youtube.

What's the proprietary alternative?

Dude it's literally poison what do you want??? It also leeches into the environment extremely easily.