If a step available to you is "buy a bagel", that's all you have to consider.
leftpad was incorporated into ECMAScript in 2017 for a reason.
> Outsourcing of complexity is /not/ elimination of complexity.
This is technically true but functionally false. You're literally arguing against the concept of abstraction layers, while writing text into a form built on top of hundreds of them.
There are two thoughts I have regarding this:
1) Leaky Abstractions seems like what you're trying to point out, and accurately so [0] but,
2) you can still rely on even leaky abstractions. You must, in fact, to function in this world. In some ways the quote, "In preparing for battle I have always found that plans are useless but planning is indispensable" [1] applies to abstraction as well.
[0] https://www.joelonsoftware.com/2002/11/11/the-law-of-leaky-a...
But a more practical, analogous situation might be: should I buy a nice, warm bagel at the local bagel shop, or should buy it a store and toast it myself? In that trade-off I can take for granted that I'm getting a bagel, but the delivery mechanism, the quality, the integration options, the cost, are things I need to consider.
The decision will depend upon your requirements. If you are organizing an event, maybe I get some bulk catering from the bagel-shop. If you want to use your aunt's bespoke berry jam, maybe you use the store-bought bagel so you easily can use your home spreads.
Identifying the optimal simplicity can be a hard problem, but that shouldn't preclude narrowing down choices with some rough heuristics so that you don't need to investigate the combinatorial explosion of all possibilities, or rethink the system dependencies back to: "first we have a big bang."
