I guess it won't but it shows they absolutely don't care about pertinence of search results anymore, so their argument that DMA will make for worse search results does not hold much value when they are already worsening their search results out of their own volition. (those are ads but they take the entire page and are easily confused for results, so as a standard-issue user the difference between ads and search results is vague. It would be improved by reverting to the previous UI of ads where they were shown quite differently)
I'm not following. How does DMA help with this?