Do the Dems look stupid for having made assumptions about Trump's finances? Yes.
Will the Dems admit that this made them look stupid? No. They are unapologetic liars. In 6 months they will spin this into something monumentally stupid, and it will break our brains.
Regardless of their motives, the Dems were right on this issue. The IRS has the ability to view minute bank transactions, but we the people don't have the ability to see what our political leaders are doing with their money? That doesn't make any sense to me.