I am a freelance writer, and I work with a lot of photographers. In this line of work, positioning, and lighting are everything - hence the photographer's art. You could give me their equipment, and I woouldn't have a clue what to do!
A wedding is slightly different. Yes, with modern cameras, the law of averages says that anyone with even a vague idea can get a good collection of shots on the day. It depends entirely on what you want - and what your budget allows.
If you want a properly shot album with all the lighting and poses done correctly, get a professional, and check their references first - i suspect the guy at your recent wedding was just not that good.
However, you get what you pay for - or you do if you check first anyway - and if all you want is some reasonable snaps as a momento, then rope in a few friends, and take your pick from what they give you.
So, to anwer your question - does your �700 camera make you a photographer? No, it makes you someone with �700 camera. It's like giving you a Formula One car and expecting you to win Grand Prix in it - it's just not that simple.
With practise and experience, if you have a degree of skill, you could become a good photographer, but don;t expect the camera to do all the work for you.
It's like writing - anyone thinks they can do it - it's not as easy as it looks - trust me!