It won't be worth it no. This myth was started because there was some fairly good scientific research done which suggested that THC and other cannabinoids were a defence mechanism produced in greater quantities when when plants were stressed. This is why some people don't water much during the last days of flowering. Water stress was said to be a big contributor to small increases in THC content.
What is clear from the research paper I read was that there wasn't enough evidence to totally prove the case for water deprivation. There are similar suggestions about THC being some sort of plant sunblock, but the evidence for that is shaky too. The reason why these plants, and only these plants produce cannabinoids is still something of a mystery to science, and is way more complex than simply being helped by poking a great big hole in your stem.
But what started as simple few sentences suggesting that THC may be a defence mechanism of sort gave lots of people crazy ideas that attacking their plants would increase potency. What is certain, 100% fact is that if putting holes through your plants really did anything for your bud then more people would be doing it by now.
Feel free to experiment for yourself, but I for one consider this myth BUSTED.
As an added nugget of info, columbian gold was a type of potent weed which was popular in the 60s and 70s. The "gold" colour was achieved by slicing the plant all around the main stem near the end of flowering, cutting the top bark layers only. This cuts off nutrient and water supply to the bud leaves, turning them yellow. These were then not trimmed too much, which gave the schwag it's look. Apparently, doing this didn't increase potency, but was purely for the look of the final product.