It's never been easier for someone who needs to work two jobs... to work two jobs; one with weekly hours and another you can do whenever is convenient. It has never been easier for a student to make some cash when it's convenient for them and with no weekly obligation.
These are improvements on jobs that already existed and new jobs altogether.
We should probably be focusing on how to provide more upward mobility and access to education instead of demonizing improvements to an economic sector which will always exist.