There are dark attributes to things and when something is pushed or shown only/mostly in a positive light, or isn’t being properly explained, it is needed to be balanced/made aware of with darkness. Usually what’s being hidden is the process (what it is that you may have to go through) or what’s going on behind the scenes of that particular ‘manifestation’...

I may in the future comeback on here and discuss the word a bit more, but here are my thoughts about the matter currently.