Doug here is most certainly not Ryan Gosling. But add a hoodie and some sunglasses and most people wouldn't be able to tell—as shown by this video by MojoInTheMorning.
Granted, Gosling was filming something in that city at the time, and that probably predisposed some folk to seeking Ryan Gosling out. Still—I can't help but wonder if Doug will go out trying to play off that he's Ryan Gosling in the future. Wouldn't you? Even Hideo Kojima loves Ryan Gosling.