I feel alarmed. On the other side: I remember reading a longer explanation from the Sass maintainers that basically not much will change because the other tools stay available. Node SASS (as far as I understand) stays and that’s something Hugo can work with. The same uproar happened when Ruby SASS was kicked two years back and now we lean back and are happily using node for SASS (or SASS for node, however you interpret this sentence).
It all boils down to the following: We need to procreate, ferociously, hehe. Then we need to support and interest our little creations in learning how this world works. Physics, biology, mathematics. Gift them a “Magic Tricks Box”. Subscribe them to Make Magazine. Give them a computer. Show them how to build a volcano in our kitchens and make light from potatoes. Do this for 15 to 20 years and you might have created a person who is interested enough in one single thing to dedicate their lives to it. I call it “the maintainer existence problem”. If there is none, it gets deprecated.