Some cultures perceive being fat or skinny differently because of the correlation of wealth which changes between impoverished nations and developed nations. Being overly fat or thin purely for cosmetic purposes is almost universally shunned by progressive movements because it is factually and objectively worse than a healthy weight. Skin Tone will be the same way. Future generations will look back and agree with me on this.
A culture of harm and racism, that sorts people into class by lightness of skin, needs to be imposed over with discrimination of equal or greater measure. Tolerance for the intolerant is unacceptable. Maybe India doesn't see the necessity compared to countries with much more violent racial tensions, but it's a lesson that can be learned an easy way or a hard way.
If you believe something fucked up then people are gonna call you out on it. No exceptions. If anything you should be happy others are willing to discuss it with you rather than write you off as unsalvageable or incorrigible.