That is about Google tailoring the results for you.
DDG is doing this across the board. So everyone gets the same results as the video states.
But I don't think the average user would consider this "unbiased" and "not filtered" as DDG has claimed their results are.
https://reclaimthenet.org/wp-content/uploads/2022/03/Screens...
"Unbiased" is doing a lot of work here. I think DDG's messaging about that could have been better, and they could have better indicated what was going on when they used that language -- but to be clear, there has never in the entire history of DDG as a browser been a period where they didn't rank political content and where certain political sites weren't given higher search rankings over other sites.
There is no betrayal here because this is just how search engines work. There couldn't have been a period where DDG wasn't ranking political sites because the only way for a search engine to avoid ranking political content is to not return political results in the first place (never mind the conversation of what does and doesn't count as "political").
At most what we see here is that DDG was a little too eager to lean into people's misunderstanding about what they meant by the word "neutral", and too slow to correct people who took something away from that phrasing that wasn't true.
If you have ever written a line of code you should understand that things have order. If search engines didn't try to organize results the result you are looking for could be on the first page or the 100th.
While I think it's fair to say that most people don't understand that google changes results based on the person. I have to imagine most people at least understand a basic concept that search results are organized in some way. Either by humans or machines (or likely both). That organization is complicated and has a number of factors in play and if done correctly should bubble up what is true.