I’d say the main difference, then, is that the booster will be supported by those pins resting on top of the arms. Chopsticks use friction to hold up their load.
yes the booster’s structure is very strong vertically but not nearly as strong horizontally. There may be some “squeezing” forces from the chopsticks but this is effectively for fine positioning only. It will not support the weight. The booster will “land” by getting its pins (which stick out a bit) on the top rail of the arms.