Off topic - hydrogen embrittlement is very real. The bike of my avatar was built with a Columbus SL fork that was nickle plated but not heat treated afterwards. At 8000 miles with a 160 pound rider and no crashes, the blades developed cracks around the bottom of the fork crown, 2/3ds circumference on one side, 1/3 on the other. Learned later that nickle plating high strength steel drives hydrogen atoms (molecules?) into the alloy and that a light heat treat was required to drive them out. And those atoms/molecules act like gravel in mortar; not what you want in your house when a small earthquake happens.

The cracks we are seeing here aren't that different from what I had. Now, granted, I didn't spend a lot of time investigating them. Way too close to home for me! (I lived through (barely) a Lambert fork breaking. I'd just ridden that fork down 2000' of descents.