Note that 

 #Vegetarianism is an ancient practice in India, including Tamilnadu, but because of the influence of Jainism. Non-Jains in Tamilnadu were generally not vegetarian in ancient times. For example note the story of Aputra in Manimekhalai Canto 13.  
 #In Jainism, while the monks practice austerities, the ordinary householders live worldly lives (laukika dharma) while aiming for moksha on the longer term (paralukika dharma). They are both to be praised, as Valluvar does, from different points of view. 
 #Kural 6 can only apply to someone who had five senses (i.e. was born as a human being), and conquered them. There is no question of a supreme God having five senses, and a need for Him to conquer them.