hasn't this already been in fedora for almost a year?
Consider that you're a big company deploying software to hundreds or thousands of machines, and you hit a difficult-to-diagnose performance issue, crash, etc. You'll very much appreciate if the OS has made it easier for you to debug things.
Put another way, Fedora users/developers might appreciate having frame pointers because they have to debug more frequently, but RHEL/LTS release users might appreciate frame pointers because on the less-frequent occasion when they need to debug, the stakes are much higher.
Can't say it's been useful here, any development I do is miles away from this. It hasn't hurt either so... cool, I guess
Call me pessimistic, but I'm not convinced this being the default will lead to more profiling. There's plenty that could be done without this, that isn't, so I'm not buying it.
Profiling is one part, but the debuggability this enables is going to be huge in the long term I predict.