[passivate]

I think the flaw is you misinterpreting the argument.

In my opinion, the bottom line with obvious caveats is this - Human-time is more valuable than CPU-time.

If you are shipping at scale then the calculus is different - Don't waste end-users' human-time and their cpu-time and/or server's cpu-time.

If you're writing code with a team the calculus is different - Use/Learn techniques and tools to reduce the teams' human-time wastage plus all the above.

If you're writing code just for yourself the calculus is different - Save your own human-time.