I think the increase in allergies is due to children not being exposed to allergens. It used to be the advice to not feed your child foods that are commonly allergenic but now the advice is reversed.
I think they are suggesting a mostly automated build process and then a manual entering of a the second factor OTP at the deploy stage. The entering of the 2FA isn't something that will be hard to easy to mess up and you still receive the benefits of automated builds for the most part.