Sounds like you're not pushing things as much as you used to in '08. The situation is no different today than it was in 1996 when I started this ride. There are sections of my current codebase that switch for iOS 4, 6, 7, 8+, android and desktop Chrome, working around idiosyncracies of each.

There's also IE, Firefox and "am I running from the local filesystem" checks in there. All necessary to work around real differences in implementation in the most current crop of "modern" browsers.

It's a rare feature that I can ship that works out of the box in every browser. But, as it was 20 years ago, this is the job we signed up for. I just wish people stopped going out of their way to add more unnecessary things that I need to special case around.