You guys seem to be ignoring the fact that I gave two possible explanations.
Furthermore… it’s literally a choice made by the filmmakers to ‘fuse’ the infinity gauntlet onto Thanos’s arm. With the power of the backspace button, it could have very easily been preserved somewhere, minus his arm. Also, are we really saying that just because Thanos’s arm got fused into it, the world’s greatest inventor, tony stark, could not have purged the gauntlet of biological matter, allowing someone else like Hulk to use it?
Better idea: Don’t have the arm get fused inside, just say the golden gauntlet is still there and can be used for the infinity stones again, rather than making Tony create a new infinity gauntlet out of materials that were actually established as being unable to contain the stones. Not only in the comics, but in the preceding movie!
It’s a huge gaping plothole. It didn’t have to be there, other than, I guess, to sell new toys.
Oh, and don’t forget that I also said since there was a five year gap, the movie could have also explained it as maybe Tony had the sun-dwarf guy make a new infinity gauntlet as part of holding out hope… or something. Maybe not even Tony, but someone else. Hell, maybe the dwarf guy made it on his own accord, found out about the plans to bring the stones back and unsnap people, so he shows up with it. That would still be more plausible than, “Yo, I made a new gauntlet out of ordinary earth materials.”
The only other possibility is that Stark’s gauntlet is made out of something like Vibranium. If that’s the case, then why not give a throwaway line to explain it?
It’s a shining example of lazy directing.