The only person who made that claim is Alex Jones.
FWICS, the IRS can put a lien on your bank account, though.
The IRS has no enforcement mechanism to collect the individual mandate penalties, except the one mechanism they already had — offset of any tax debt against any federal refund. Just make sure that you will not get a federal refund, and it’s all good. If in the future, they pass a mechanism to levy bank accounts for the penalty, the day it is enacted or regulations promulgated will be the last day I have funds in a bank account.