That is BS. My tax situation, 2018 compared to 2017, I owe $5k compared to 2.5K in 2017 and paid $3.5K less in federal taxes in 2018 compared to 2017. My charitable contributions increased by $1,000 in 2018. In 2018 I took the standard deduction compared to itemizing in 2017.My biggest complaint is that our charitable contributions no longer benefit our return. I donate for other reasons, but I can see some people really reducing their charitable contributions because they will not get the tax benefit.
You give money to charity because you want too. Most people even losing the itemized deductions are paying less in taxes now.