grazing frame

I have read that using Grid Grazing, using a grazing frame, is good for chickens however, I’m concerned that the metal grid will cause Bumblefoot. It is advised to use the 1/2” grid but, it looks like it would end up aggravating their feet. Please advise. Thank you!

So I'm new at this. I have some mint that grows wild where I made my chicken run and I heard mint is a good thing to have in there. I know they can still peck it but is this adequate protection from being torn up by the roots or will my chickens just scratch this netting right out of the way...