People have been growing cannabis (and hemp) and selecting for certain traits for 1000s of years. The plants and worldwide gene pool lhave long been tampered with, are no longer really "wild" such as they were before humans ever started growing and breeding plants. The landraces have surely all been messed with, including selected over time for yield, potency, ease of growth, etc.
It is impossible that mankind has tampered with the entire global cannabis genepool...not yet anyway.
Here's an example of what I'm saying and Im pretty stoned right now, so bear with me.
Lets say 1000s of years ago, a Himalayan or maybe an afghan dude is out on a stroll close to a mountain top, He stumbles upon this beautiful "landrace" plant growing in the wild and decides to fill his pocket with seeds..
Later upon returning to his village a few valleys over..
He plants the seeds and grows them
as does his family for many generations long after he has left for the afterlife...
These seeds would be considered a farm line or a landrace farm line or heirloom landrace or heirloom farm line, take your pick..lol
The true wild landrace is the one still growing 1000s of years later near that mountain top a few valleys over where those seeds were originally collected
by that dude out on his stroll..
I would bet there's a lot of untouched landrace ruderalis out there to be discovered and with zero human interference.
But like I said prior to your response..
I guess its a matter of opinion.