Yes, in terms of work, you have access to a work permit renewable maybe every year or every six months. You have a social insurance number that begins with a nine. Employers, therefore, will know you don't have permanent status in Canada, and that means they are unlikely to be hired for any highly qualified job or sent off for training or invested in by an employer. Most people in this circumstance are forced to rely on minimum-wage jobs. In terms of improving themselves or getting an education, primary and secondary education is fine, but after you get past that, you are treated as a foreign student, and therefore you have to pay fees as a foreign student, and of course most families are unable to do that.
With respect to health, people from moratorium countries have access to the interim federal health program, which covers only emergency health care services. This will do for most things, but if you have something more important or more chronic, then it is a problem. Obviously, the name interim federal is meant for a short period of time, but when you have people relying on that program for years, then they are in difficult situations.