E.g. Reporting post also share the same limits are posting...
Yes and AFAIK, so does searching, and anything that involves an HTTP POST. I might be wrong though.
The 360 sec throttle is a pain when you are a "legitimate" newbie, but as you said, it will go away as soon as your account gets more activity. Keep in mind the huge amount of noise generated by newly created accounts, I think it's a necessary evil.
The simple fact that you're not bearing a commercial (paid for) signature and a short outlook of your posts clearly show that you are on the right track to becoming a valuable member, so just be patient and keep posting sensible and useful stuff
EDIT: oh, and edits are probably counted as 'post' actions too