Niko, I have seen grounding bars that are 1/4" thick by 2" wide, in some bigger switch gear equip. So then that would not be a violation correct? I don't see the violation
But the grounding terminal bar that is not 1/4" thick by 2" wide, in similiar gear or subpanels, would obviously be a violation? Yes
Both those statements sound correct?
Unless some one can find an issue with the above but i don't see a problem with the 1/4" x 2" ground bar being in the panel.