techniques are gimmicks,plain truth is some egg head stoners posting shit in high times its doubtful most even do.
botany is a science,enough research has been done on cannabis that we know what these " gurus" call sucker leaves are actually a part of the plant with an extremely important role to play,the leaves sticking out of the buds generate about 5% of the pohoteosynthis that the sun leaves generate,the sun leaves job is to convert more energy into sugars & carbs the plant can absorb.
if anything gently tie your large sun leaves out of the way of the bud site its shading but never remove them until they gobyellow & pop off with a gentle push downwards .
the sun leaves are the solar panels 4 your buds,I've done side by sides of entire tables where I've cropped the sun leaves to prevent bud site shading,vs the rest of my tables being ran sog single cola & the colas in the unmolested tables produce from 10 to 20% more useable bud with just as much resin as the less weight pruned plants .