This is a bug to track this topic: 
https://docs.google.com/presentation/d/1ct-KzLeTZ8qqlq1eDh0GpYi9uFYDyQN-SzZwPbgyBGM/edit#slide=id.g2c09faf481_5_6



In the Details incognito subtext:
[...]showing the string in OFF state is confusing. A simple "string only" solution would be to change the subtitle string to say: 
Warning: Allowed extensions may be able to record*** your browsing history

***Why do we say "recording" your browsing history?? That's not an actual extension permission AFAIK. Should this say "reading" to match current permissions strings?

A more elaborate UI change would be to show different strings depending on the toggle state AND on whether the extension even has the relevant permission.