Any thing that gets folk out looking at the Stars cant be bad shurely. Youngsters are particularly good at developing enthusiasm and persuading their parents to come outside and look up. The count may not be truly scientific but it will reap dividends in the future if only to make people aware of the poor skies we endure. In contacts during outreach events many people have commented on the difference between U.K. conditions and their camping holidays abroad when the constellation patterns were lost amongst the multitude of stars visible there.
British Astronomical Association
Supporting amateur astronomers since 1890