[jbentham]

Are you actually suggesting that SO/SE are blocking Tor because they intend to track all of their users by their IP addresses (or browser metadata), using national security as a justification?

I still do not understand how blocking Tor helps here. People who are concerned about their security will either use mirror sites, or use data dumps such as what is available at archive.org, or simply not use the SO/SE content at all. The number of users who will abandon Tor and the protection it provides for the express purpose of visiting SO/SE is negligible.

This move will not increase the number of persons who see SO/SE adverts or who are trackable by SO/SE. It will also not decrease the number of persons who will be able to access SO/SE content. So I continue to be mystified about the rationale behind this policy change.