Yes, part of the reason I found it interesting to compare is that, when looking at the 'painted' signs around the queue, they also didn't look exactly painted freehand. Then again, I don't think the queue ever looked particularly 'authentic'. The framed Brer portraits always looked like obviously printed images, for example.
You wouldn't think it would be that hard to do. Indeed, I'm sure they could find someone in Louisiana who paints signs and get them to do it for them. Disneyland Paris just got in a company that restores actual historical monuments to refurbish their castle, so why not also go for authenticity here!