Like depriving the plant of nutrients or oxygen, depriving the plant of light will reduce yield. These are things plants need. If they don't get them, bad things happen. Period. I don't know, maybe some good things happen too, like increased resin, but I've never seen it. I guess you need to decide if you want to take a chance on getting more resin on less weed, or for sure get then normal amount of weed with the normal resin amount.

That's one of the fun things about this forum. You get to see a great many differences of opinions and ways of doing things, then decide for yourself which one is right for you. If the THC hits your brain you did it the right way.