The post title is on English, not French, so the French etymology isn’t particularly relevant.
Also, part of why it’s chain mail in English is to specify that the individual links are made of something rigid. If the definition of maille mattered, it would still fit for something entirely different like a string vest.






It also carries a jail sentence for possession, just like CSAM, so you’d be in big trouble if the police ever had to look at your computer for any other reason.