Nah. Firstly, anyone can be a Project Manager. Anyone. Secondly, there’s loads of jobs in it. Although you’re unlikely to get one unless you’ve got demonstrable experience. In lieu of that, the most recognisable qualification (which also happens to be an absolute piece of piss) is a good option.
The distance between getting a qualification and having the door opened to loads of job options re: Prince2 is about as short as it gets.