Naw. Metal thickness aint critical cept for longevity maybe. As long as you dont burn direct on top of the metal by use of an elevated firegrate even the thin ones last a long time. That one looks purty hefty. It just dont seem to have many kewlish features not found on a million others. I made several that look just like that one. Sit them up on two inch pipe and a plow disk. The fact it allows the fire to be tended without moving the meat is an excellent plan. If you want bbq just build the fire on one side and put the meat on the other side. If you want grilled put them in a stacked position. That is the po folks method commonly used before the advent of offset creosote factories
Also works well in rusty split barrels.