Yes, according to the post, the "primary benefit" of using Cliqz is so that you can get access to their search engine, which is exclusive to their browser.
You're right, instead of saying exclusive feature I should have stuck with 'primary'. I can see how those two words have different enough meanings to cause confusion.
Though it's important to remember that not everyone on here has English as their first language, and we should generally be considerate of that when reading people's comments.
