Good question. Because precisely, the way we shape the langage will influence the way we shape society.
If - for example - we introduce more pronons for more inclusivity - we will automatically have a langage more inclusive for person that are non binary or trans, which will automatically lead to more acceptance from the public and more tolerance on a subconsient level.
But don't lure yourself here, the battle for a more inclusive langage is just a tiny (around 5%) part of the battle for more inclusivity in society. In fact the english langage is already inclusive ("they" exist). Languages like french are not.