Incognito mode has its own ephemeral cookie store, so it serves exactly the purpose he suggested. Yes, that doesn't address the fact that web protocols can stil

Incognito mode has its own ephemeral cookie store, so it serves exactly the purpose he suggested. Yes, that doesn't address the fact that web protocols can still leak quite a bit of identifying information. Torbutton tries to address information leakage, but it incurs its own costs (e.g. blocking things like HSTS and sharing the entire connection with whoever runs the tor nodes).