you can just add the yuri tag without nsfw, cause yuri has been marked as nsfw already :)
mby some pic with yuri nsfw but this i dont think so but if u say so i will add in future : P
he meant that all yuri tag is not shown to people, who use safe mode here, so there is no need to add nsfw tag when you're adding ecchi or yuri tag
i dont add nsfw here)))) i just add yuri