I'm not an expert (harvested only one auto, with two plants in bloom and and veg right now). In my first grow I LSTed the tallest cola after the stretch period so I could keep my t5ho lights closer. That bud didn't develop as heavily as the next tallest/dominant cola.
It's hard for me to know if that LST was beneficial. Even though that cola didn't develop well, the stress may have caused the plant to put more energy into the other buds, making them bigger than if I hadn't LSTed. And, the plant probably wouldn't have produced as well if my t5ho lighting had been kept further away (just for that one dominant cola).
It sounds like the general advice is that any stress is discouraged which interferes with the plants development -- unless it's to solve a problem (a tradeoff of one problem for another).