Yeah, I'm a bit dubious about this being the prime reason for the platform doors too, but fluffers are a real thing - see https://www.wikiwand.com/en/Fluffer_(L

Yeah, I'm a bit dubious about this being the prime reason for the platform doors too, but fluffers are a real thing - see https://www.wikiwand.com/en/Fluffer_(London_Underground) https://www.wikiwand.com/en/Fluffer_(London_Underground)