The author seems confused about the nature of this attack. It has nothing to do with using the go language or any other, it's purely about the choice of consensus algorithm and the vulnerabilities of a small ecosystem. In a small blockchain, it's much easier for bad actors to gain enough hashing power to control proof of work. I do see they are moving to a proof of stake algorithm, I hope that works out.
Still unclear to me why some of these smaller coins exist, except perhaps for rampant speculation. From the krypton site: "$KR is my vision for an ultra-fast blockchain that can realize all of the features of Ethereum with fewer initial coins, faster speed and lower inflation." That sounds ok, but right now none of those things are the primary problem with Eth.