I believe that people find stuttering cute if they have a hard time coping with or properly understanding the hidden covert behaviors, the 90% that happens below the [iceberg](https://www.google.com/search?q=iceberg+covert+behaviors+stuttering&tbm=isch&source=lnms&sa=X&ved=2ahUKEwitnp3QvuWDAxWgqf0HHSnvD-cQ0pQJegQIDhAB&biw=1745&bih=835&dpr=1.1)