Father Reports Therapist For Sharing Son's Private Info With Stepdad

In a recent post on AITA subreddit, a father expressed his outrage after discovering that his son's therapist had been sharing private information with his stepdad. The father had signed his 14-year-old son up for therapy after their dog passed away and the son was left unable to speak. However, after the son's stepdad sold his bicycle as punishment, the son called his father crying, revealing that the stepdad had found out about private information shared in therapy sessions. The father confronted the therapist and ultimately decided to report him for sharing private information. However, the father's decision was met with backlash from the son's mother and wife. What do you think? Was the father justified in reporting the therapist or did he overreact? Read more in the post.