I agree to some degree. What has been hardwired into people’s minds since they were small is difficult. For example, a man born a Christian is likely to be a Christian his whole life. I will live my life thinking that Starbucks coffee is the best because it’s the one I’ve been drinking every morning. But this is the way that you have anticipated it.
There are many people that turn from a theist to an atheist after several debates. There are subreddits dedicated to this. My friend may introduce coffee from a place different from Starbucks and I may begin to prefer coffee from the new place.
People who only believe that it is righteous to believe in their belief will soon change their beliefs overtime. The hardest to deal with are those that believe in anything unconditionally, without any regard to sensory experience.
Everyone experiences a change of opinion forwards many things as they grow older. Everyone can relate to this. This itself is another example that people can be subject to change.