Thanks. Indeed, it doesn't directly answer my question. For one, the author seems to be failing the "Chesterton's fence" test here: it doesn't even try to answer what langchain is supposed to be good at, but ends up being bad. It just plainly says it's bad, that's all.
And, as stated, I also don't know the answer to that question, so this is kinda one of the primary concerns here. I mean, one possible answer seems pretty obvious to me: it would be better to keep your app vendor-agnostic (to be able to switch from OpenAI to Anthropic with 1 ENV var) if at all possible. Neither of articles and doc-pages I've read in the past few hours tries to answer to what extent this is possible and why, and if it even is supposed to be a real selling-point of langchain. TBH, I still have no idea what the main selling point even is.
https://www.octomind.dev/blog/why-we-no-longer-use-langchain...