there are elements of truth to said article. It is true thyat UV-b is used/needed for more thc production, but potency is inherited not a function of geography. I can take some old landraces from say Columbia, ship the seeds to the artic circle and put them on 12/12 and have stony weed.
Photoperiod does not affect potency, UV-b seems to promote more thc production.

2b2s