Well, I’d say it’s the same for getting solder back by desoldering/disassembling PCBs. I mean, it’s totally possible, just not very easy to do - on a survivor scale.
Especially to reuse it without any flux might be a problem…
I guess the antenna and muffler conversion to other materials is not seen as a big problem, since the gain is very little (as in; why bother to get alumin(i)um that way while it’s plentiful on solar cars and some other sources. Same for platinum (and it doesn’t have much use anyway)). I guess that’s also the reason why nobody took the time to fix it yet.
Also, I consider it as a “fair payback” for having, for example, the steel broadsword in your hand completely disintegrate into thin air if you don’t fix it in time.