Liberation Theology specifically isn't huge in the US rn.

In the past and still today (though overshadowed by right-evangelicalism in terms of political power now) there existed a "Christian Left" that supported the "Social Gospel" but this was mainly liberal and amounted to support of labour unions and policies to alleviate poverty and so on.

Idk how movements work, I imagine to a certain extent these things naturally arise, so it's possible when an actual revolution becomes possible there won't be a huge need for LT or things like that to win people over. Even if it's not a huge aspect of this organizing or movement building I don't think we should completely abandon using religious language when talking to certain demographics or embracing religious people sympathetic to socialism.