Creating 3D .cube LUTs for camera OOC styles

I posted the question a couple of weeks ago about LUTs:scene vs display: https://discuss.pixls.us/t/luts-scene-vs-display/30682 and was told by Jade_NL:

So I understood the the LUT didn’t affect the scene referred processing (as long as I don’t move it earlier than filmic).

Did I understand wrong?

Thanks