I’ll second this. Data for my home city (CYGK) is 10 years old as well. There are a couple of bridges that were built here in the last decade. In the sim imagery, they’re just beginning the groundbreaking for the first, and that was back in 2013.
Bing already had newer data for this area at launch and has since been updated twice, with the current dataset being 2 years old. But the sim’s data has never been updated since launch outside of what was covered in the world updates.
But yes, what you’ll see for large parts of the world, the sim doesn’t necessarily reflect what’s in the real world (subject to the rules of the BGL files CasualClick mentioned) right now.