I am sure there are lots of "brackets" inside an A380 wing that are not part of the structural integrity of the wing or the airframe. for example, I expect there are many "brackets" that hold things like wiring looms, hydraulic pipes, landing gear doors, landing and navigation lights etc. I very much doubt the failure of one of those types of brackets would cause the wings to fall off in flight!
Without knowing the function of the "brackets" in question, nobody is in a position to make a judgement regarding the seriousness of the issue or the urgency of the repairs needed. So far, all I have read from people who are in a position to know the scope of the issues is that it's not critical, poses no safety risk and does not require immediate grounding or action to the next scheduled service/inspection. This evaluation comes from professionals who have the responsibility to make such determinations every day. I trust their judgement much more than the scaremungers being reported in some media reports.