The answer to your question: Are temporary workers employees or employers? Of course, they are employers not employees. We can call them temporary employees because they perform temporary work, get paid and that's it.
As for which is better, temporary work or a job, the answer varies from person to person. Some people are better suited to freelancing, while others are only suited to jobs. This depends on the individual's situation and skills. However, for me, I prefer freelancing to a job.
Most people in this era are more confident in being employed until they are old, because they are used to it and they prefer those who have a secure job and pay every month or twice a month. They rarely or only rarely want to work temporarily.
Because there are others who just use their employment as a stepping stone to their desire to have their own business in the near future and when they are up to speed,
they will decide if they want to let go of their employment.