If you find that "insulting", consider how it feels to be told to go through the work of filing dozens of most-likely-duplicate reports simply because Apple won't deign to allow searching existing reports. Regardless of whatever excuses they give for that, it sends a very clear signal about how Apple values the time of third-party developers.
What exactly isn't apparent? How Radar is the way things get done and you need to file a Radar if you want anything fixed? I'd think that's crystal clear given that every single Apple engineer you talk to will explain this to you.
It was a big mistake for Apple to ask outside developers to use a bug tracking tool that purports to be a user interface into Radar. I would much prefer a ticket system like those used at other companies. If Apple engineers triage a ticket and decide to open a Radar, that process should be opaque to the outside world.
Once Developer Relations made the decision to allow outside developers to create bug reports, Apple should have given us a modern, full-featured web interface. Instead, they gave us the ridiculous, brain-dead tool that you see at bugreport.apple.com, which looks like it was designed by an incompetent Cobol programmer (apologies to Grace Hopper).