I know the TOR project was started by the US navy, and that now I2Pnis the preferred method of browsing the darknet, because many people believe it has been compromised.
This is not true by any means. A "switch" to I2P never happened, and just a few months ago an exploit[1] that could deanonymize eepsites was published. Tor is still the only "method of browsing the darknet"; by most definitions.