There is no record of an Act of Congress or Executive Order which either prescribes or prohibits the addition of fringe, nor is there any indication that any symbolism was ever associated with it. The use of fringe is optional with the person or organization displaying the flag.
It doesn't look like it means ANYTHING AT ALL, GUYS:
https://www.armystudyguide.com/content/army_board_study_guide_topics/flags/about-the-gold-fringe-on-.shtml
Gold fringed flags were at Obama's inaug as well