I don't know how much credence you put in the Urban Dictionary, but here it is for what it is worth:
Urban Dictionary: left hand path
left hand path
1. In eastern mysticism, any spiritual path embodying the principle of yin; characterised by passivity, and reaching enlightenment by flowing according to one's
inner nature, the opposite being right hand path. In the original
Indian doctrines, it was called Vamachara.
2. In the modern western re-interpretation, any spiritual path which pursues worldly goals and pleasures as opposed
to the spiritual.
1. In walking the left hand path, one takes the path of least resistance to achieve goals.
2. A student of the left hand path in the West
may perform rites for
money or
sex.
Lol, I normally consider Urban Dictionary a handy tool when it comes to slang, but not exactly for philosophical technical terms, and that entry contains as much wrong as truth.
If anything, reading that definition I'd think of RHP-charlatans that "pursue worldly goals and pleasures as opposed to the spiritual" and "may perform rites for money or sex" - they just don't do it openly.
I mean, of course LHPers can do so as well, but we at least are generally honest about it.
Our path includes the option to do that stuff, but it's not restricted to it.
And a spiritual path with only worldly and no spiritual goals?
I mean, there is a grain of truth in it - the LHP (both east and west) tends to not make a difference between what is worldly and what is spiritual, treating both as one and the same thing.
Nevertheless the definition there sounds a bit paradoxical, unless the author is referring to 2 different meanings of "spiritual" in one and the same sentence.
Furthermore, depends on the exact interpretation of the words, but much of both the definitions 1 and 2 seems to fit the western and eastern LHP equally well, in my opinion.
But still fascinating that that article also connects it with the concept of yin.
Also there, depends on what exactly one means. "flowing according to one's inner nature", that certainly sounds familiar to me. I wouldn't say that it applies to all forms of the LHP, though, nor that it's restricted to it.