I think this article missed the point of the ad. To me the ad showed that the only way to open to people’s minds is by engaging with them. It’s not saying eveyone’s view is valid. It’s showing that when you get to know people it will make you evaluate your own beliefs.
For example the guy who was very anti-transgender was exchanging phone numbers to keep in touch with a transgender person at the end because he got to know the person first instead of the label and realised that his viewpoint was wrong. Each of the people had their mind opened to actually discuss things by getting to know the person first and hearing a bit about their experience and all of them walked away from different then who they were in the initial interview.
It was not saying that oppression should be tolerated or that opinions are just up for debate it was saying that debating won’t change people’s minds about issues but letting them get to know you as person will. That the only way a person who is bigoted, racist, or transphobic is going to change is if they get to know people in other contexts and see that they aren’t the stereotype they think they are.
You open people’s mind by interacting with them as human beings and letting them realise they are wrong by how they get to know you and not by just trying to argue them into changing their mind. That’s what the ad was showing.