I don't think there is the need of curating content in a social search way, if the SE itself is just good and alternative SE's that are coming up seem very promising.

e.g., you.com lets you pick preferred sources, so that you can tailor your search experience to your needs.

They've also done a great job on recipes. https://you.com/search?q=oven%20roasted%20broccoli

Neeva and Kagi also seem promising, though their both waitlist/invite only still