They did a couple of good things...but there were many groups far better.
From the years 1971 To 1975 in American popular music?
Then name them.
Paul McCartney, Elton John or maybe The Stones? Hmm. Carole King or The Carpenters...both these female lead artists could claim a top place among those 5 years we’re debating, but the album sales of their best early 70’s recordings since then is being blown away by Frey & Henley. True all these great artists hardly should be considered second class popular music (in fact they all belong in the HOF) but it’s the lasting and enduring consistent sales that the Recording Industry Assoc Of America is recognizing today.