A Reddit Thread About Led Zeppelin

Why does Led Zep never get old?

Your thoughts on how their sound has consistently remained top shelf while other bands from the 70s tend to lose their luster.

My opinion, seeing as how yes, I've thought about this before:

My guess is song structure. A lot of their choruses, where there is a chorus at all, are just music. Some songs where there are choruses they just say the name of the song. Some of it's put together weird, and it's my understanding that was purposely done. It retains freshness because the parts of the songs are good, and it's not what the ear gets from other artists/bands.

Am I right or am I wrong?