The Underground were the type of people you will always have around. The kind of people who are opposed to anything that's popular- in order to make themselves popular! Ha. I know that they felt that bands like the Airplane were distorting music- which is a big part of the punk music idea. They all felt that bands like the Airplane were making music so complex that everyday people were becoming alienated from it. But strangely, the Airplane always had a very hard edge to them, even to what I would call proto-punk. I mean, the lyrics 'we are forces of chaos and anarchy, everything they say we are we are' from Volunteers are TOTALLY something that the Sex Pistols would also have in a song (and pretty much do!)
That being said, though, I am a huge fan of The Velvet Underground. They're one of my favorite bands ever.
But... listen to Velvet songs like 'The Gift'. Sounds like an Airplane jam to me- the super heavy bass, and the guitars. Now what did the Airplane think about the Underground?