I agree with you in general. However:
> If Einstein derived them, who is "Lorentz"?
You can (re-) derive a lot of existing stuff.
> You can (re-) derive a lot of existing stuff.
Einstein was aware of Lorentz and the transform. He was aware of Poincaré as well. He knew the state of the art for his time.
> You can (re-) derive a lot of existing stuff.
Einstein was aware of Lorentz and the transform. He was aware of Poincaré as well. He knew the state of the art for his time.