Why smart provisioning in the first place?

[kjm]

I need to measure some values on the GPY while the 3v3 power rail is quiet. To this end I have stopped the lte modem powering up in the background with

pycom.lte_modem_en_on_boot(0)

that way I can take the readings then power up the modem & send them. The process of initialising/attaching/connecting takes no longer than when the modem used to power itself up in the background previously. So now I'm left wondering what is the purpose of smart provisioning in the first place? Am I missing something?