Low cadence (under 70) causes more time under tension, and higher forces, and is generally suboptimal for sweet spot level efforts.
Without wind, the only penalty is the basic suboptimality of it.
With wind gusts in your face, you’re already at high force, and your cadence can instantaneously drop to 60-63 pretty easily within one pedal downstroke, and then release as the gust is alleviated and reduces the high drag force.
Cadence sensor won’t sense those within-pedal-stroke cadence changes.
But your central nervous system (specificially the stretch reflex and GTO’s, among other sub-brain structures) will, and the result is not only that they maintain increase force to accommodate for the lower perceived cadence (subconsciously), but they may unnecessarily overshoot force production within the muscle for a moment when they suddenly are going more slowly than your brain expects them to go.
It’s like the opposite of the picking up an empty jug you expected to be full, effect.
The result: more energy wasted, in especially performance-damaging ways.
Does that answer your question or am I missing the mark?