Their waterproofing wax is a mix of paraffin and bee wax. So if the whole point is to avoid petrochemicals or avoid animal products, this isn't a solution.

Perhaps soy wax could be used for this...

You either accept natural products (beeswax) or accept unnatural products (pfoas). what's the alternative?

Get a little wet sometimes I guess.

At least if we use beeswax we can approach it sustainably, filling the world with microplastics doesn't seem like a sustainable thing to be doing.

A combination of beeswax and microcrystalline wax (made from petrolatum) works the best, but beeswax alone will provide fine water repellency, just slightly less durability and ease of application.