To be honest the "Privacy" aspect can be taken care of in other ways; like using a VPN for query dilution, for example. You don't have to recruit 100 mechanical turks to do junk searches for you; although there are browser addons that can in fact do this automated searching for you...I've run them before.
SearXNG is a front-end that protects your privacy still. Hosting it locally dilutes it some; but provides maximal control; as you can use VPNs and control things much more tightly than you could if you hosted it elsewhere.