As I did read, it does not look like Kantian ethics favors socialism (especially given it requires slavery by economic imperative), but I would like a more rigorous analysis.
Recall that the definition of Socialism (at least in what is the concern of a Economist) is the public ownership of the means of production (Ball et. al).
Recall that Anarchism is the view that a society without the state, or government, is both possible and desirable (Crowder, 1998).
Anarcho-Socialism is a self-contradicting concept because you cannot have public property without some kind of state.
Note that as explained by this paper, democratic socialism is politically impossible because it would imply (1) slavery, (2) suppression of the free press. With a similar argument that can be trivially derived by the same economic proofs, is to say that ancho-socialism is politically impossible.
Some previous research
Ball, T. and Dagger, . Richard (Invalid Date). socialism. Encyclopedia Britannica. https://www.britannica.com/topic/socialism
Crowder, G.(1998). Anarchism. In The Routledge Encyclopedia of Philosophy. Taylor and Francis. Retrieved 23 Feb. 2022, from https://www.rep.routledge.com/articles/thematic/anarchism/v-1. doi:10.4324/9780415249126-S003-1