He was probably thinking of the 100% taxes paid then no penalty, but that only applies if the taxes are withheld on time. From the instructions for 2210. 

 "Who Must Pay the Underpayment Penalty In general, you may owe the penalty for 2023 if the total of your withholding and timely estimated tax payments didn't equal at least the smaller of: 1. 90% of your 2023 tax, or 2. 100% of your 2022 tax. Your 2022 tax return must cover a 12-month".