If you find the images idiotic, please know that I didn't paint/make them. They were made by Hindus. I am not trying to insult or criticize any religion. I am simply pointing out the fact that a hindu and muslim doing the same thing are being treated differently in a country that calls itself secular. Do you honestly find nothing wrong with that?
I just want to point out that those sculptures were made centuries ago.
Secondly, within Hinduism, there are several sects who have their own sets of beliefs. Some sects, especially those which strictly follow the Sanatana Dharma, will find these sculptures highly offensive. Some other sects whose beliefs have been influenced by their indigenous tribal beliefs will not find these offensive.
Anyways, point remains, contemporary Vedic Hindus rarely depict the Supreme Being in this fashion and that is why there was an uproar against Hussain's work. It is as simple as that.