Very much indeed. At least if you’re optimizing your site for Google. Today, 95% of all mobile searches are done on Google. For Google to retain this insane level of dominance, they’re going to tweak their algorithm so that it’s optimized for mobile users FIRST.
In fact, they already have…First, Google rolled out its Mobile-Friendly Update (which many people called “Mobilegeddon”). This update penalized sites that weren’t mobile-friendly (for searches performed on smartphones).
But if your target audience doesn’t search that much from their phone, this update wasn’t a big deal. That is, until Google made EVERY search a mobile search. How? By making their entire algorithm “Mobile-First”.