I don't think that's accurate. Mojo is explicitly compiling tensor graphs that run on accelerators. it's not like PyTorch where python is providing the chassis but not the engine.

I don't think its going to be a good general HPC language just because its targeting a specific set of AI workloads, but they have shown some examples of synthesizing code which is comparable to hand-written kernels.

but its not out of the question from first principles