The biggest problem with the new tax plan is that the withholding tables changed to be more accurate. This is because a large number of people's standard deduction went up enough to almost match, or exceed, their mortgage interest and SALT deductions.
And since payroll withholding doesn't account for the mortgage interest deduction, but does count the standard deduction, they ended up taking out less taxes (basically giving everyone a couple hundred dollar "raise") during the year, which made the year-end refund much smaller.
And too many people budget big items based on that year-end overpayment refund, instead of setting aside that extra pay every month. So lots of people feel like their taxes went up.
Now what would have been nice is if there was an information campaign that would have business encourage employees (via auto payroll deposit) to divide their paycheck into checking and savings accounts, having that "extra" money go into savings automatically.