I'm not saying you can't get good art from any camera, but you can't get the SAME art from any camera. You use the right tool for the job. I use a Nikkor 50mm f/1.4 wide open for available-light dance photography (something I couldn't do with any other glass I own), and a $10 Recesky or Holga for "toy camera" shots outdoors.
Now that's just ridiculous, and it makes my point perfectly. For want of a Glock to stop an attacker 10 yards away from you, you have to put yourself in much more danger, allowing an assailant to get within crowbar range, to fend him off.For want of a "glock" you can achieve the same result with a crowbar.
The camera is a tool, but it's not "just" a tool: the right tool makes the difference between success an failure. Ask a watchmaker.