Uber and Lyft did give long-term drivers “appreciation awards” which they could use to buy stock in the IPO. So not unprecedented.
https://techcrunch.com/2019/04/11/uber-is-dishing-out-apprec...
https://techcrunch.com/2019/04/11/uber-is-dishing-out-apprec...
Disclaimer: I am an Airbnb employee