I used to watch the show (in fact, I watched a couple episodes just two weeks ago) and I owned several of their albums. I like many of their songs. I was always sympathetic to them as a band pulled together as an American response to the success of The Beatles, and the fact that they did not have musical control until well into their existence as a group.
Luckily, they toured and I did see Davy about 12-15 years ago in concert. Viewing their tour videos on YouTube, it is apparent that they had a good degree of talent and versatility, which vindicates their desire for control of their material and recording.