Maybe because that’s not the full quote and you’re misunderstanding the meaning. This is like when people think “survival of the fittest” means the strongest/fastest etc.

Obligatory https://xkcd.com/927/

Yeah, two strokes sounds about right :/

The training I did only taught “the right handed way” despite me being a lefty since that’s the only “correct” way of using a chainsaw. If you learn that way it becomes natural, like using a mouse right handed. If i pick up a chainsaw without thinking about it it immediately feels wrong and a switch to right hand grip.