There's lots to be said here, however I'll try to keep it to the main points.
1. The Zello free app: Zello wants to somehow flaunt the number of users using Zello while forgetting the free application exists. The free app seems to be a haven for controversial topics, racism, and bullying.
2. Leadership: Top management in the company is simply disconnected from the reality of how to retain good employees. In my tenure at the company, I've seen a handful of talented people quickly become discouraged and leave with less than a year of work at Zello. The claim internally is that it's a difficult product and industry. However, that's not the case. It's simply a tough environment set by leadership to feel like more of a challenge than it should be.
3. Employees are expected to work in office, regardless of COVID or any other difficulties. Remote work is allowed but unofficially frowned upon in general. Additionally, leadership expects all of your time, not just 40 hours per week. If you're not working 50-60 hours per week you're simply not doing your fair share. The pay they offer as a result does not motivate others to work to that level, nor should anyone be surprised with that type of environment.