Yeah, what you describe is the ultimate patronizing attitude from western moral and cultural relativism. You can rationalize and tacitly support the worst injustice and psychopathic abuse with "It's just their culture", like:

"Sure this is wrong here, but who are we to say what's right and wrong there?"

The attitude is inherently narcissistic, because it's totally devoid of empathy. It's only worried about keeping up appearances.

"I would love to help, but you know... I'm just so busy! But I truly from the bottom of my heart wish you the bestest!"

<superficial smile>

Cultural relativism is all smiles up front, but total, egoic, self-absorption in the back. In being pathologically concerned with not appearing racist, it is the ultimate modern, sophisticated, 'cultured' racist attitude. Who are we to say another culture deserves clean running water, after all? What if they worship dirty water? What if it's their religion? Well then we certainly have no place helping, that would be presumptive on our part.