Funny FOX is blaming people who are complaining for not saving.
Yeah, if a family that made 20K had put away the $10 per week extra from the tax "cut," they' may have saved enough to pay any tax bill. The problem is that if that family didn't use the $10 bucks per week for food or toward rent, what good was it? Of course the same is true if the paycheck goes up $200 per week. But, the $10 makes a much bigger difference to the low income family.
For most of my working life was claim an extra dependent on my W2, and then correct it when I did my taxes. That way, the "government" took more than I owed every week, and I'd get a refund. The opposite approach was to claim 0 and have less taken out. The idea was to save --or, ideally, invest-- the money and pay a tax bill later. That way money that was essentially being loaned to the "government" for free could be put to use.
But, that only works if a family has disposable income and can afford to save money. It doesn't take into account unexpected expenses that would eat up any savings. The US poverty rate for a family of four is about $25K. That's around $500 per month. They may have tvs, but they don't all have savings accounts. Anyway, this was advertised as a middle-class tax cut. "The poor and those who do not save their money will always be with us."
Otoh, this is the first year for this. Nobody knew exactly how it would work out. People who can afford to make a mistake this year will probably figure it out for next year. Affording it simply means being able to pay any tax bill that comes along. People who can't afford it will have to borrow money, at "reasonable" rates, of course. It's better than paying the IRS interest, but it doesn't allow much extra for savings.
Look on the bright side. At least now we've gotten rid of that oppressive estate tax (which could have paid for a wall, just like the one between the Koreas. That's another subject, but it ends up that any tax we pay now will go toward it).