If your currency/project can't take a Spoetnik attack, and feels the need to take legal action against him......it's not a very good sign.
If S. is just trolling, then no worries, but he's not the only guy bringing up the red flags, and there is actually some evidence in the form of chatlogs.
This is no longer about the currency but about a legitimate businessman's reputation.
This would mean Crypto is a legitimate business which he would need to pay a load of taxation and licenses.