Only because you seem determined to make fluffy what is not fluffy.
It would be a pity if sacred went the way of disinterested because people misused it so that what started as a kind of hyperbole - “kale smoothies are sacred to a certain kind of hipster” became common usage, because sacred is the literal opposite of profane. I accept that language has to develop, but there remains a need for precise language, and I think we should resist the fluffying of precise words where no good alternative exists. Holy, numinous and sacred are not all one and the same thing.
I could go even more off topic and start to argue about what we mean by religion - there are nontheistic religions like Marxism and American Football as well as theistic ones, because ultimately religion is about the belief systems that hold societies together.
TBH, I’m not one for cultural relativism.