Have you followed the 3.11 performance improvements by the same group? It's ~25% faster than 3.10.
That's a pretty generic statement and likely true only in a very specific frame.
It rubs people the wrong way but I always call out blanket statements. Generally languages get faster with each version and theres a lot of numbers thrown around, it doesn't mean your apps will get anywhere near that boost.
If you're lucky that one loop that concats strings got a few ms shaven off while that ORM youre using continues to grind the whole thing down.