If you are asking if the impact of having a DNS service hacked could be worse than any other service: there is no apples to apples comparison really. How can on

If you are asking if the impact of having a DNS service hacked could be worse than any other service: there is no apples to apples comparison really. How can one measure what is 'worse': having one's DNS hacked vs any other service getting exploited? What data does the machine contain? What credentials does the machine provide? What networks are the machine connected to? How much 'value' does any of this data or network control have, or rather how much value would be lost if said data, device or network got hacked? The measure of all of these things is context specific, and depends entirely on the exact circumstances for each particular exposed device.