Could it be titanium coated rather then titanium?
I've been using titanium eye wear for years without issues, from Nikon to Mont Blanc and Cartier.
Something that I've observe with the pair I had. Sometimes I've accidentally slept on my spectacles & I can simply bend the frames back into shape.
In one accident the leg was bent almost 90 degrees & didn't break when I bent it back If it had been a metal frame it would have snapped off, I know because that's what happened to an older metal frame
Don't how a titanium coated frame would react under such punishment