> Documents indicate that PRISM is "the number one source of raw intelligence used for NSA analytic reports", and it accounts for 91% of the NSA's internet traffic acquired
That coupled with malicious Tor relays(https://www.theguardian.com/world/2013/oct/04/nsa-gchq-attac...) makes practical low latency anonymity extremely difficult to achieve. You can have some confidentiality though.
Maybe you should/could ask if ML would enable "good enough" anonymity through intelligent route selection and avoidance and traffic fingerprint normalization.
ML is a double edged sword.