It’s true that lots of software is slower than it should be. It’s also true that software does a lot more than it used to. What’s not true is that abstraction is the reason for slow software, at least not on the order of magnitude that the article claims. Even in the worst case, the cost of language level abstractions is well outstripped by advances in processing power.

I’m not actually sure we really even have “slow” software. At least not relative to how much that software can do. Latency is a different story.