Good catch — that was actually my mistake. I mixed up cm and mm from the marketing material, and when I actually measured just now it came out to around 0.9mm. So not quite as thin as I claimed, and I probably wouldn't have noticed if you hadn't asked.

I did find some Kevlar-reinforced options that are supposedly ~0.3mm, but they seem to be raw fiber without connectors, purposed for drones, and I'm not sure about global availability.