He failed to legitimize the government that has been ruling the country since 1979....?
Presumably this website feels the Pahlavi dynasty, which was installed and backed by foreign powers and also lasted about 50 years, was the last legitimate government.
You don't have to support theocracy to recognize the absurdity of claiming that a government that's been in charge for 50 years, and is recognized around the world, is somehow illegitimate.