Earlier quoted context omitted.
Precisely. I'm trying to understand the resistance in good faith, but the article didn't explain their position very clearly. "It's already prohibited" - so why the fierce opposition? "Passing a law against discrimination of X will stigmatize X" - Imagine someone was making this argument for an existing federally protected class.
The one good faith argument is that Hindus feel targeted by it because, de facto, this is about higher-caste Hindus discriminating against low-caste Hindus. Whether or not that's particularly convincing or a reason not to pass it is debatable, but I think it's a valid reason that merits consideration. Any reasoning beyond this ends up being gobbledygook.
It's also worth noting that if you are born in a specific caste, and convert from your religion, you will still be subjected to caste discrimination from the folk in the original religion.
Obviously under the rules of the current Supreme Court anyone can claim their bigotry is because "religion" and carry on doing it. Don't want to serve someone? claim doing so violates your religious beliefs. Renting a property? ditto. Employment? again.