This is true (altho it is certainly possible to enjoy multiple versions of a song.) A related issue is that an artist can’t always go home again. I have a CD of Roger Miller performing studio versions of his hits, cut decades after his prime. I have a comparable CD of the Everly Brothers. After one partial listening I’ve never been tempted to play either one again.
The young Everlys had crystalline harmonies that served the song and I don’t think they truly hated each other when they had their early hits. Roger Miller shot to fame with a devil-may-care voice. In both cases the voices thickened and the fading of fame seemed to stifle their spirits.
I’m not familiar with Taylor Swift’s songs or style — but she’s still young and extremely successful. Maybe her rerecordings won’t lose anything important. Maybe they will. Maybe naïveté was a key, unfakeable element in some of her early songs. Don’t know.