Learning to make a pizza is not a solution to a problem "I am hungry". This is why the responses were the way they were. The solution is to get food quickly.
Even we try to solve a problem of fixing the future hunger, "learning to make a pizza" is also not an optimal solution as there are other simpler ways to make food that can fix "I am hungry" problem.
Generally the example is very much describes why DevOps is just people following the hype and not the best solution for majority of companies that are trying to implement DevOps.