Gonna be real, this feels a bit like
Or when people try and argue 100k isn't a lot in places like NYC due to cost of living, even if most people live well below that line.
My point is if you have 100k a year to work with, you're doing pretty goddamned well.
So many arguments of this style over the years fuel the outcome of inaction and lack of progress. In the 2016 debates it was "well Donald Trump's kids shouldn't get access to these education programs", so therefore the programs just aren't possible. For getting health-care for 9/11 first-responders, it was "well we might provide healthcare for something unrelated", so let's not approve it. And now it's "what could people making $100k possibly need?", so let's not expand these programs or their availability even though more people in them would make them more popular and more acceptable and more available.
If you are single, healthy, have your medical and other insurance premiums paid for, and are paying mid-1990's level of rent and gas/heating costs (before housing and oil prices began their climb), then yeah $100k is damn good.
But today, people raising, say, two children, and making $50k each, having to use two different insurance providers and paying premiums outsized to salary, if they can get coverage at all (spouses can't be on others' plans if they can get their own coverage, even if it is inferior), not getting enough life insurance (which is calculated in multiples of base salary so if your base salary is lower then oh well), taxes withdrawn under two separate schemes, may not even have employer savings plans at that salary level, and paying 2010's rent and gas/heating costs in the NYC area, just to have a roof over their head, there's not nearly as much room as people think there is.
And that's just if the two people are salaried, in one job each, and can manage pre/afterschool fees for the kids (they could apply to the school system for free/reduced fee meals and care for the kids, but of course would not be accepted for assistance at this earnings level). If your kids are not yet in the school system, the costs for pre-school or day care can be exorbitant. Haven't even mentioned possible care for elders yet.
If you are not salaried and somehow working two jobs/shifts to pull close to this level in, your payments may not be regular and missing rent becomes a possibility. And the constant churn of clothes, food, supplies and care-while-you-work for dependents of any age (including elders) can have you into debt, even if you don't lose pay from work for taking time off when your kids are sick or your dad fell again.
So it's quite realistic to not be doing comfortably at this earnings level. Sure, they are able to give it a try where others may not be able to, but quite a few end up in similar predicaments to those earning less, it may just take a little longer to get there.