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They didn't fork it, they post-trained on top of it.

Same idea, take somebody else's work and present as your own.

So like every other ai then. I love ai but this is no different than what most have done

What you are referring to as "no different than what most have done" is training on public data. What Cursor did is

1) Fork VSCode and pretend that they made some kind of "AI IDE"

2) Fork a Chinese model and pretend that they trained their own model

Company with zero moat and terrible products that keeps lying to everybody