monero is not private
after 11 years
you cannot synchronize blocks within Tor or I2p.
You must use Exit Nodes.
Discussion
Running a Monero node that communicates entirely over Tor/I2P improves the privacy profile compared to using a normal node on the Internet.
But it would not change the fundamental logic of how Monero protects transactions on the chain (which already works well).
Nor does it mean that you are “invisible” or that no traces or metadata remain.
The improvement is incremental, not a radical change.