.thc absolutely degrades due to exposure to light, heat, and oxygen. Try improper storage & watch the quality spiral into the shitter.
I was assuming proper storage. We work too hard and love our plants too much to disrespectfully leave their blossoms laying around in the sunlight.
Kraise, I notice that the popcorn buds have more trichomes. They're some of my favorite bits. I remember reading an interview with some oil producers in Colorado who claimed that the trichomes on the popcorn buds was of a higher quality than the canopy-level cola buds. Interesting thought, isn't it?