Communication Preferences - Master Opt-Out setting?

On the Preferences page within the Intuit account there are handful of product tabs each having a column of check boxes for various email communication settings. Many of the boxes are checked by default (opted in). Instead of unchecking all the columns on the individual tabs I first went to the very bottom of the screen and found a toggle under "Communications - email" and toggled it off. A warning message said all Intuit email communication would be disabled. After doing so all the email settings in every product tab were unchecked/cleared (opted out). So is this toggle basically a "Master" setting to opt-out of all of Intuit's product communication settings (all tabs & columns)? That seems to be the case...

This community article explains the process for setting product communication preferences. However the article doesn't mention nor explain the "Intuit email Communications" toggle located at the bottom of that same Preferences page.

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