nope, you can send it over i2p, TOR (to clearnet or HS nodes) and clearnet.
the main idea about i2p in anoncoin is to eliminate attacks to find your location and making listening on others connections impossible. (from a technical view)
Don't we want miners to be anonymous when they are awarded coins for PoW of the winning block?
So then if they use the high-latency setting to be confidently anonymous, they are at a speed disadvantage to those miners who don't want to be anonymous (e.g. the corporations, etc).
Also does anyone understand and agree that without high-latency, the NSA knows who you are? (due to timing attacks are possible on low-latency mix-nets)
nope, i2p is end to end encrypted, nobody (beside the involved ones) knows what passes from where to where, ie someone else cant see who published it or how high their latency is.