Where does it fail? The opposition between gating networks and basic methods is not a matter of inherent logic or simplicity versus complexity; it is conditional on input data quality and transparency of the weighting mechanism.
The weak point is the presumption that complexity is inherently unnecessary; a gating network can incorporate weak signals and non-quantifiable textual justifications, offering a depth that clear basic method assessments cannot reach.
The real problem is not complexity, but lack of transparency, for example, if the weighting mechanism is a black box.
If the weighting is auditable and the textual justifications add quantifiable value, it can surpass the raw simplicity of basic methods in volatile markets, such as when OPEC decisions or monetary policy announcements drive price movements.