Garlic routing[1] is a variant of onion routing that encrypts multiple messages together to make it more difficult[2] for attackers to perform traffic analysis and to increase the speed of data transfer.[3]
First sentence. Check up the linked article as source.
You linked an article that doesn’t say anything to back up your claim. Why do you say i2p is vulnerable to timing attacks?
First sentence. Check up the linked article as source.