"I don't see any truly large, complex, momentous applications or platforms written in Python." Except YouTube LOL. Don't get me wrong, Python is not fast. But

"I don't see any truly large, complex, momentous applications or platforms written in Python." Except YouTube LOL. Don't get me wrong, Python is not fast. But every time you run into a bottleneck you just rewrite it in C/C++/Rust and move on.