Yeah, and it was designed for... access from the factory. I can not beleive that in 11 years it went un-noticed that the only way to access an operating railway station was to walking onto the tracks & climb onto the platform because the only access method went into a fenced-off paddock!
I think I get your point now, but although GMH shut down their car factory there, they did retain a few (office?) staff, so there were still some workers that could and did use the station via the footbridge. Then part of the site was leased to other industries, and their staff could have used the station also.
But the point was about the train stopping there after it closed. As long as the people on the train didn't leave the platform, there should have been no problem.