The only thing you can really accomplish with cultural competency training, in my view, is to show people that they don't know everything. It's difficult, if not impossible, to make people culturally competent through a training program. Cultural competence comes through a lived experience for a certain period of time.
People who are serious about it first need to understand how much they don't know and then to be given resources or access to resources or people who will help them to learn more, if they want to. Lawyers, as one example, think that once they've talked to one indigenous client, they know everything for all indigenous clients. That's a big mistake. A little education there can be very damaging.