Whether the ant post amounts to plagiarism, it is definitely somewhere between extremely lazy and intentionally misleading. No particular idea has its inspirations or origins traced or cited, there is no comparison to comparable tooling or discussion of prior work, and there is absolutely nothing to actually position or discuss the project in a manner that might lead to "Contributing to the wider ecosystem."

If only they had had a claude write the post, it'd be full of citations, inspiration credit etc.