No. Aldmeri Dominion had it banned because Talos in their belief is not a god, he was a mere "human" when he accepted to be a god, he also created the Imperials which is why some still worship him in secrecy
yea that
this is the short version for people
in the hundreds of years that passed since oblivion, the highelves attack the empire and defeat them. they offer peace, though one of the major terms of peace is to stop worshiping talos, because he was born a mortal and should not be considered a divine. the terms were accepted, and this caused many nords to hate the empire (as Talos was a nord and a hero in the eyes the nordic people)
hadvar is a nord too