If we ignore the ML/AI/array libs, where Python shines, the core development has really done nothing much for it since 3.0.

Despite MS, Guido and co throwing their weight, still none of the somewhat promised 5x speedup across the board (more like 1.5x at best), the async story is still a mess (see TFA), the multiple-interpreters/GIL-less is too little, too late, the ecosystem still doesn't settled on a single dependency and venv manager (just make uv standard and be done with it), types are a ham-fisted experience, and so on, and so forth...