They probably had their reasons, but I'm just showing what's available.
I would expect benchmarks to match typical usage, if PyPy can't run in a couple of GB then choose a better language.
Don't get me wrong, i love pypy and the rpython jit.
If the ARM chips don't meet Intel peak performance, and I suspect they won't, you're in for a bad time going through similar system.
Apple has a very significant ecosystem advantage, however.
Why take that out of the headline?