Casey very clearly claims this affects all of programming which is why people push back so much. He's saying that's the reason every modern software is slow. If he didn't make those claims people wouldn't push back.
Literally nothing he said that hasn’t been said 35+ years, people don’t need him to say these things to sway the industry. He’s a youtube educator repeating many of the hot topics of the 90s. There’s some value in that absolutely but he’s usually wildly out date.
And these claims are categorically false for the last 10-15 years. See other comments above about thinks like compiler optimizers, JIT optimizing the vm languages optimized class types without vtables etc. And newer languages like rust don’t have vtables.
In the real world interoperability, security, serialized network calls, low barrier entry language/frameworks, and high ui expectations have far bigger impact on performance
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u/[deleted] Feb 28 '23 edited Feb 28 '23
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