It's a simple point. In Japanese budo - in Japan anyway which is where I live - you are taught to respect other styles and other budoka. This is a quote from the dojo rules of a koryu.
Shinbukan Kuroda Dojo Rules of Conduct
Rule 6. Please refrain from making negative comments in reference to other forms or styles of budo.
So if there are any derogatory comments they won't be from high-ranking budoka.