Comment by Znafon

The PEP goes into details about the motivations and why the single thread model has limitations: https://peps.python.org/pep-0703/#motivation.

> Yes, some applications will remain hard / impossible, but I'd argue Python is not a good fit for apps requiring high performance / high scalability anyway

People are already trying to use Python for parallel tasks. Forcing people to use another language does not help them much.