this one seeen rather inteligent for yukkuri standarts it runs instand of prevoke mister human and it was just one artist who was making retarded remilias<.<
Actually, the Remiryas' defining characteristic was, from the beginning, that they were even more retarded than the average yukkuri. This one is simply uncharacteristically smart. As in, it runs away when confronted with obviously lethal danger, instead of demanding sweets-da do~
Its more like the artist thought that a Remila that was to dumb to live would be a poor addition to the story. Besides I think this artist supports the idea of natural selection. That is to say the living yukkuri are alive because they were smart enough and/or lucky enough not to die.