"The whole discipline Rachel writes about is clearly intended for mature, scaled operations where outages..."
That is not true. RotB is describing saftware inefficiencies that we learnt to do without 20 years plus ago.
Because the Python hackers that built all these tools did not pay attention, when they built new tools they recreated the old problems.
Worik's 23.6918th rule of creativity: It is easier to write than read.