Are people bad at their jobs or are the jobs just bad?

The gig economy is way worse than the author describes.

Gig workers can't advance with the companies they work for.

Gig workers can't build a network with their coworkers because they don't have coworkers...and there's a good chance that they are competing for work with other people working for the same company.

There are dead end day jobs, and then there is gig work.

This isn't too different from most low-skill jobs. Most people don't aspire to be assistant manager at McDonalds, they do it for a while, build a resume, then move.