Yes, they'll have problems too, but will they be as bad?
The issue in this example is that the results were also SEO optimized for Google. These days Google's results just seem liked paid placements or stuff SEO engineered to appear there.
Duckduckgo is far from perfect, but it seems better than Google at returning organic results.
I wish someone would develop a search engine that only used a few thousand top curated information sources - wikipedia & so on. I'm sick of wasting my time on SEO spam.