It's clearly a harbinger of change. The cost of hiring a cleaning service is X+Y, where X is labor and Y is overhead (including insurance, etc). Customers seem to be demonstrating that they are willing to take some risks in order to get services with reduced Y, and workers are demonstrating that they are willing to take some risks in return for money and flexibility.
The only way this is a passing fad is if customer or employee risk aversion suddenly drastically increases. I don't see any compelling reason why it would.
The only way this is a passing fad is if customer or employee risk aversion suddenly drastically increases. I don't see any compelling reason why it would.