That was a wired controller in the submersible; they wouldn't have had to do this. Everything about that submersible was ridiculous, just not in this particular way.

Yeah. Every search engine makes a decision about what to show to you and in what order; it's simply not possible to show you everything with equal priority. This means no search engine offers a truly neutral search, there can always be bias in it.

The only thing I'd worry about over other search engines was if Duck Duck Go was systematically removing search results based on keywords, like if they were trying to make it never show results about the Holocaust or Tienanmen Square or so on even when those are explicitly searched for, or to only show results on certain topics from a tiny handful of selected sources. But I haven't seen any evidence to suggest Duck Duck Go is doing this.