“It’s clear that there’s no technical blocker preventing AWS from supporting the language, leading me to the conclusion that it’s instead either a lack of leadership, or a lack of will–which effectively reduces down to the same thing.”
Python 3.10 shipped in October 2021. Lambda still tops out at 3.9, the same as August 2021, while Python 3.11 runs about 25% faster. Google Cloud Functions and Azure Functions both run 3.10. The managed runtime was the whole pitch. AWS kept the bill and stopped doing the managing.