Because IRS and FinCen are two different branches of the Treasury Department.  FinCen is no more related to IRS than is the Bureau of Engraving and Printing.  It will be interesting to see, however, whether these filing requirements are delayed or repealed before the November 2024 elections, when small business owners will have been told how much closer Big Brother is watching.  " ‘Well, go pick up a Bible off your shelf and read it. That’s my worldview.” -- said Mike Johnson.  So maybe this relates to Herod tracking down the male babies in Bethlehem.