SearXNG is a mixed bag to be honest...I find that Ononoki's SearXNG delivers decent results...It's a bit mixed at times with PieFed being the third option. Some topics are surfaced better than others, so your mileage will vary with SearXNG.
Using the No AI version of DuckDuckGo sends them a message that their bet on "AI" isn't going to win them any accolades. It's an easy way to push back. As they are tracking those metrics and people can see the numbers of how many users disapprove of AI.
