I would argue if they’re smart enough to have cash, they’re smart enough to know they want it to grow not stay the same value over time.
You don’t need a Bloomberg terminal to ladder CDs. Many of the military credit unions have 2-3% rates on 18 months or less.
This hypothetical 620 with 6-18 months salary banked (how I read your scenario) can open the same money market account I have that’s over 2%.