If it was illegal then the charge wouldn't have been dropped - it's that simple
So as the charge was dismissed (due to the poor wording of the law) then the statement of "'Perfectly legal' for Rittenhouse to carry a gun" is legally correct, so for politifact to decide not to change their own decision now that the legal issue has been cleared up, shows nothing but bad faith.
In law something either Is or Isn't legal, there is no "well its a bit grey", so once the decision is made as to whether it's is Legal or Illegal, thats the only two choices you get, there is no option for an organisation which is supposed to "fact check" but to correct their ruling in light of the Judges decision. That they won't means they should no longer be considered independent "fact checkers" but instead propagandists with no claim to be factually correct in any other ruling they have ever made, rendering them worthless.