Short version: we really do not know, the process of determining whether vaccine shedding is real or not cannot be based on few stories of people saying they "think" it was vaccine shedding.

Spike proteins can't move that easily in the air and will break down (That's why snakes have to inject their poison and not cough on you).

Nano lipid particles used to coat the mRNA were found to stay intact in mouse urine and feces. We really do not know if this means they can be moved from one person to another via close proximity, and from what I understood they do not replicate.

Also keep in mind this can be a divide and control strategy, (My own injection: the people who are spreading the idea of vaccine shedding are mostly those who won't speak about the massacres happening in Palestine now and are mostly false and controlled opposition)

He also briefly mentions the concept of bio-resonance, basically that people can get symptoms simply by close proximity to other sick people through their electromagnetic waves.