Interesting video about the Lynskey factory:

I must say that I was more impressed by the Nevi factory video/frame building process:

What both video show is that the welding is just one step of the frame building and that there are a lot of steps needed to build a quality titanium frame, a welding robot only helps for one step, all the other remains. Together, all those steps take a lot of effort and explain the high manufacturing costs of a titanium frame, savings during the welding step won't dramatically reduce the manufacturing costs.