The Church didn't win the debate and the Celts held their position on this central philosophical point up until the 12th century. Free speech is protected from government intervention. Even the early Greeks didn't offer this breadth of personal freedom in their democracy. Socrates had to take hemlock as the remedy for the free speech of his adventurous spirit. It is a primal urge no matter how that is defined socially.
Celtic people are all over the globe.
Remember that the Celts were originally a migrating tribal culture unified by language and fundamental egalitarian philosophy. Celtic people today are the inheritors of a culture foreign to the prevailing culture, with a foreign language and foreign cultural concepts. A legitimate inheritance. The feeling-need for people today is to create an intimate process of knowing. Physics has met up with religious philosophy.