>If you choose TypeScript or Python, you’ll hit a performance wall the moment you venture outside of web apps, CRUD servers, and modeling.

This really isn't very accurate. It is for Python, but JavaScript is massively performant. It's so performant that you can write game loops in it provided you work around the garbage collector, which, as noted, is a foible golang shares.

The solution is the same, to pre-allocate memory.