There is a material difference between syntactic abstraction and functional abstraction. It's analogous to the difference between someone learning to program a

There is a material difference between syntactic abstraction and functional abstraction. It's analogous to the difference between someone learning to program a computer and someone learning to use a computer. The second is far easier to do and requires far less intellectual overhead. By the same token, if someone implements TensorFlow in a different language, there is little room for complaint assuming the same functional abstraction (and minimization of intellectual overhead) is present in that language's implementation.