About exporting dog meat: They are in any case stray dogs roaming around on streets, dirtying streets, biting people, spreading diseases including deadly rabies, projecting a third world city look, etc. And when millions of Indians are still deprived of basic necessities like enough food, clean drinking water, basic healthcare, basic education, and even a proper roof on their head, it would be a luxury to provide shelter for all the stray dogs by the government. If some NGOs or individuals want to shelter the stray dogs at their expenses, fine, otherwise what is the logical/practical problem in exporting stray dog meat, when we have no problem with other animals like goats, cows, water buffaloes, chicken, etc.
About eating dog meat: I don't eat it, but I have no issues with those who eat it, who am I to criticize their food habit, at least as long as they are not questioning my food habit, like eating goat meat.