Personally when I travel by train, I go to the ticket office unless there's a queue, as someone talking to the ticket person may take a while. During that time quite a few people may have used the machines, hence the skewed statistics.
750,000 people responded to the survey, approx 1 in 80 for every man, woman and child in UK.
The Covid Inquiry seems to be showing that those in power care little for the needs and welfare of the elderly and the disabled. This urge to close ticket offices shows much the same. But people rallied, and made it difficult for a cost-cutting govt to ride roughshod over us.