This is what happens when you make a simple library and then raise a bunch of money at peak hype. There wasn't really a valid business path but now they have to find some way to make good for their investors.

If I'm being honest, LangChain seemed like it created more restrictions than it made my life easier. I found it far more flexible to write the few lines of code myself. Most people are consuming the APIs. The advanced cases get into modifying model logits and such, but that requires you run the model yourself.