Earlier quoted context omitted.
AFAIK garlic routing is still harder to crack than Tor: https://geti2p.net/en/comparison/tor . The main advantage of Tor is the number of users.
The network security people I know stopped bothering publishing attacks on I2P's directory service--which was(/is) in fact subject to eclipse attacks--because I2P didn't seem to care to fix the issues. Here's a great paper. https://sites.cs.ucsb.edu/~chris/research/doc/raid13_i2p.pdf
Maybe those you know stopped, but others didn't: https://geti2p.net/cs/papers/.