> I have a personal theory that once a codebase gets complicated enough (no matter the language, no matter sync or async), you'll run into subtle bugs or performance problems
You probably, unintentionally, defined "complicated enough" to be at the point where these bugs occur - so that's a tautology.
I think the point of programming languages and techniques/libraries is to move this point of "complicated enough" as far out as possible. Without any libraries, it might be easier to understand, but it will happen so much earlier that it's not worth it. And the point of libraries is that not only do they allow you to push the problem out to a much later point in time - they also allow you to switch between projects and not lose all your knowledge.
Even considering high upfront costs, tt's a big net worth imho.
You probably, unintentionally, defined "complicated enough" to be at the point where these bugs occur - so that's a tautology.
I think the point of programming languages and techniques/libraries is to move this point of "complicated enough" as far out as possible. Without any libraries, it might be easier to understand, but it will happen so much earlier that it's not worth it. And the point of libraries is that not only do they allow you to push the problem out to a much later point in time - they also allow you to switch between projects and not lose all your knowledge.
Even considering high upfront costs, tt's a big net worth imho.