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If you look at the comments you’ll see some test results. The slowest result was 38ms / 100,000 iterations. Even if you looked at that result on a mobile device it still wouldn’t be what you’d call unperformant.

In other words, this is micro-optimisation at a pointless level.

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I don't disagree with your point. I was speaking more towards the general trend. It seems like I see one of these articles every week or so.

Not necessarily. I just finished optimizing an AES implementation where some of the functions are called hundreds of thousands of times when decrypting a 300k payload. In cases like that, micro-optimization is not at all pointless unless you forget to benchmark the whole thing for each version and compare.

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