A Microsoft is doing a good job in gaining their users' confidence and trust regarding their security updates.
B Firefox does not have a specific Add-Ons page where users could find assistance to uninstall unwanted features.
C the Firefox extension can be easily uninstalled even by novice users.
D the author of the blog is taking responsibility for not having examined the "service pack" more closely.
E from now onwards, rather than just shipping security updates in "service packs", Mozilla will publish all add-ons on its website.