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We cannot tell whether this move is good or no, because this move is in favour of ICN only but for holders they wont get dividend if they plan to cancell it in future.
Buyback gives more + for ICN holders/investors because you not waste any money to lost ICN dead accounts, you avoid paying dividends to exchanges, you avoid paying high ETH fees, you give reat reason for investors to buy ICNs. Buyback is most efficient way to distribute wealth.