Is the entire cavity of the female part and male part "gold" colored? On the Shure it is.
Shure versus UE, they are slightly different connections. I no longer have the UE but they are different. One thing is the Shures come apart with minimal force where I really had to bear down on the UE to un-snap it.
No, I don't think this is just a Shure thing and with a 2-year warranty I really don't care. JH5 is the only IEM I have ever kept over 2 years anyway. Doesn't really matter how good or better the UE cable might be as I got distortion whenever I cranked it up anyway so it's a moot point.
On the UE it isn't... If the Shure is gold plated throughout (instead of nickel or some other silver metal), you don't have to worry about it being exposed to air (unless it's copper).