Does LST increase yields in autoflowers?

probably not, but it might change proportions of varying quality of buds. you may get less yield but more quality buds and less larfy stuff. Auto is on a timer, so anything cut off (like something facing/toucing dirt after lst) was wasted time for the plant that it'll never get back. or more easily understood as resources expended that result in nothing and no ability to add vege time to make up for that loss. i don't believe anyone has properly assessed this... and there's way too many variables involved to trust anecdotes of tiny samples and drastically different set of variables in any one context that make an apples to apples comparison impossible.