No, it's evidence of demand which could exist year round but as I said it is a chicken and egg thing. Of course Xmas is busy, but if the parking was easier it may stimulate more visitors to Strand Street, especially during the working week. Don't know the figures, but my guess is that car ownership has increased significantly since the 80s, so why reduce parking?
Also, it is not a justification to say that people are lazy. People do what is convenient to them.