Because it is not what is flown in Alberta. Therefore, incorrect. Maybe at one time it was, but it most certainly is not now. So, if it's deemed that "wrong" is right then I will leave it alone in all of its glorious wrongness. http://www.culture.alberta.ca/about/emblems/docs/Emblems_Booklet_2005.pdf, and http://corporateidentity.alberta.ca/downloads/GoaCIM-1.0-Brand.pdf (Starting at 1.4.8) show the correct current Alberta shield.