When selecting “all sites” you currently have to switch the switch to the off position which feels odd. Having it switched on would be associated with having all sites selected - not the other way around.
Same applies here. The status indicator should be in the “on” state, so you could switch the extension off. The text should not label the possible action, but explain the current state. In this screen, the extension is active. The switch should be active (to the right) as well, and the text should read “Enabled” (not “Disable”).