Is there a stigma to side hustling?

In this article  by Cathy Bussewitz writing for The Associated Press she quotes Alexandrea Ravenelle, sociologist and gig economy researcher at University of North Carolina at Chapel Hill,

Ravenelle cautioned against relying too heavily on gig work for income. It can be hard to transition back to full-time, permanent jobs, where workers typically wait two weeks or more for a first paycheck, and gig work carries a stigma among some employers, she said.

What do you think about a stigma? Have you experienced this?