e.g. if you're single during this time, you are completely isolated from the world, and your colleagues. This can be extremely difficult mentally and on an individual level can be much harder than just someone with a kid. These policies shouldn't be "oh if you have kids you can take this time off" and more "this is an unprecedented time, please take time off if you need it for any reason."
Trying to make judgement calls on who needs the time off and who doesn't is the major cause of this issue.