This hurts junior employees the most. Tenured employees have equity as a large part of their comp, they are invested in the stock price, not the few % annual bump.
Indeed, I have a RSU vesting schedule 4 years from hire. It is financially unwise to stay beyond that on-hire grant vesting period, it seems.
It depends on the exact level and how well the employee negotiated their sign-on RSUs, but most employees are going to face a compensation cliff of some sort at the 4 year mark.