It's been 2 (nearly 3) years since the final version of the official spec, but 5 years since any significant changes to the spec draft. IE10 was released in 2012 with a partial IndexedDB implementation, and Edge is still missing features that Chrome and Firefox had 5 years ago.

And I was being facetious, I know I'm not a normal user. Some normal users would like to play a video game I wrote that won't run in Edge due to missing IndexedDB features, though.