I checked ddg a few days ago and it’s still not sold out.
Amazon Web Services (AWS) acts to host websites. They do not interfere with search engines.
AWS deplatformed Parler because of politics and it looks like Parler has a good case to kick AWS’s a$$.
But it has nothing to do with search engines. So you should be fine with ddg.
Another private search engine that is good is dogpile.com.
So one competitor claims that. Do any other disinterested parties back that up?