This is the exact opposite of the theory of bullshit asymmetry. It’s much easier to come up with bullshit than it is to debunk it.

The real skill is known which ideas to shoot down or heavily rework, which is probably the most valuable thing a senior engineer brings to the table.

Yes, the author assumes that the idea was carefully vetted and cultivated. If, in fact, that was the case, then, as other commenters have pointed out, the idea's champion should have ready answers to most obvious critiques.