Hello Makaversky, thank you.

Unfortunately, WebExtension add-ons do not have access to those settings, these are not exposed by the browser.browserSettings API.

See: https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/browserSettings

So until these settings are made visible in some manner by Firefox to WebExtension add-ons, BSP2 won't be able to know about them :-( Sorry for that.