This isn't that hard. Most of the time, the "changes" are useless UI Slop: "we've moved notifications to this TOTALLY BETTER OTHER SPOT IN THE SCREEN that one of our designers snuck a commit in with and nobody wanted to argue about it, because the last time it just came down to differing opinions. Its not really better but it's different!"

And the other reason is because most users probably have day jobs and need to get something done.