Almost An April Fool?

When is a door not a door? The answer being when it's on a Scottish Bus. Well this sounds a lot like an April Fool Joke but in Glasgow they wanted to tell the passengers it wasn't. I can see why they did it but the whole tone of the wording is a bit rude like the irate driver and very unwelcoming, Had they put "Please do not use." it might have been a lot more polite a reasonable, after all it wasn't the public's fault Network Something-or-other had lumbered them with unsuitable elderly secondhand dual-doorway Atlanteans from the former SYPTE. It suggests this was a ploy by 'First Group' who were working hard to gain that hard to beat poor reputation for service which they are now trying very hard to shake off.