I2P is mostly GPL, which is incompatible with Amethyst's MIT License. This will make things hard to integrate and ship them together with Tor :(
Discussion
#reticulum
It's not so easy to use and integrate with existing software.
the routing system with a lot of device is a nightmare.
I tried it last weekend with nomadnet, 3 PCs located on different subnets and 1 LoRa antenna
i2p Android is generally apache2 but many different components have different licenses. Would check the source. The latest code / versions is on their site, not GitHub or F-Droid (many versions outdated, of course).
I usually would run a separate profile and have the official binaries or one I considered better for each individual network anyways.
I2Pd, a C++ implemented of I2P, is BSD if that'd help.
ohh
And this is one of the reasons where need to get rid of intellectual property (or the more correct name, intellectual monopoly)
Not all implementation are GPL
freenet-project / hyphanet, gpl as well but oh wellp. named data networking. the only way.