The welding beads on mountain bikes are enormous. The thick welds are just for aesthetics, aren't they? They just give the visual impression of strength.
I've worked in a metal fabrication/machine shop. I never got to learn the logistics of all the operations. But we were producing some heavy duty stuff, and we never used such fat beads.
I mean, I'm not a weight junkie, but don't those gigantic beads add unnecessary weight? (Though it is probably minimal.) And in general, aren't they just absurd?
Just some pointless thoughts, I suppose.