From the article: "In an interview on Wednesday, [Gabriel] Weinberg said it is difficult to make his DuckDuckGo the default search site in Google's Chrome web browser, and that Google disadvantages his company in the Android mobile operating system as well. .... "It's one-click to get onto Firefox and it's five steps on Chrome and people generally fail," he said. The Google spokeswoman said popular search alternative…
Wait, 'one-click'? In Firefox if I click the dropdown on the search field, then click 'Manage Search Engines' I get a dialog in which can be found a link to 'Get more search engines...'. Clicking that opens an add-ons store tab with the 'Search Tools' filter applied, none of whose above-the-fold suggestions has anything to do with DDG. That's not one-click, it's a runaround. In contrast, Chrome automatically adds sea…
https://addons.mozilla.org/en-US/firefox/addon/duckduckgo-fo...
I don't know why no such addon exists for Chrome?
EDIT: Ugh I am woefully wrong, the Chrome extension only shows up when you visit the site from Chrome. Perhaps they mean choosing a default search engine in Chrome is not as straightforward as Firefox. You will have to open preferences -> Search -> Manage Search engines and then change the default engine.