Welding is being heavily targeted for automation, apart from pressure vessels etc, most welding can be automated now a days , very soon ( months? ) every welding can be automated.
You're thinking of factory welding, manufacturing or maybe repetitive pipeline welding and thinks like that.
It'll be a while until a robot disassembles a trailer enough to remove the bent axle, cleans off all the paint and rust, bends the trailer back into shape where needed, cuts a custom support to makeup for some lost strength, welds it in, primers it, paints it, and assembles the trailer.
You're thinking of factory welding, manufacturing or maybe repetitive pipeline welding and thinks like that.
It'll be a while until a robot disassembles a trailer enough to remove the bent axle, cleans off all the paint and rust, bends the trailer back into shape where needed, cuts a custom support to makeup for some lost strength, welds it in, primers it, paints it, and assembles the trailer.
Same for construction too.