As the amount of risk in the equity increases, the expected value of the equity reduces to zero.
So anything that reduces the priority of employee equity vs that of the original employees and investors implicitly increases the risk in addition to the explicit reduction in face value.
The real problem to me has been the absurd notion that someone explicitly investing cash is somehow investing more on a dollar for dollar basis than regular employees.
* VC or whatever invests a dollar amount: they write a cheque.
* Employee invests a dollar amount: Employees at startups are expected to work 80 hours a week, so if we're assuming a regular job is 40 hours a week, then their salary should be twice their regular market rate salary. So in that case, an employee is making an annually recurring investment of (2 * market rate salary - actual salary).
In spite of this a VC or whatever gets priority on getting that money back, gets a say in the running of the company, ownership/dollar lower than "equity" grants to employees. The employee gets no voting rights, has a reduced payout priority, and on top of all of that even if the equity grants were equal, the employee is still taking more risk than the cash investors because the company is also their source of employment: if the company fails every one loses their investment, but employees have also lost their jobs.
So if anyone should get higher priority for divestment opportunities it should be employees - think of it this way: if you have 10 developers working for 100k, vs. a market rate of 150k, and they're working 80 hours a week, you are looking at a per-employee annual investment of 200k. If you have 10 employees, they are collectively investing $2million a year. That's getting super close to the "big" funding rounds (and for many cases more than) from various startups.
In response to the claim that they're not providing cash flow: if you were paying market rates, you would need to find a separate investor to raise cash for twice as many employees, all being paid more. That sounds like they're providing cashflow.