To be clear, things like the OFL’s “Reserved Font Name” or the GPL’s “must distribute source code” clause don’t actually do anything to prevent abuse like this. They just give you (in this case, IJ) the legal right to sue people who do break those rules, which means preventing abuse depends on IJ having the time and money to hire lawyers to do the suing, and investigators to figure out who needs to be sued, and possibly more lawyers to figure out which of those people live in countries where international treaties allow them to be sued from whatever country IJ lives in.
Without all that additional stuff, those clauses just amount to saying “don’t be a jerk” in fancier language, which.. I think was already implied.