Do you agree with me on prog rock bands?

Yes.

E,l,p.

Jethro tull.

These are bands that only get a C. Not good enough to be in the B class.

King crimson.

Genesis.

These bands get a B.

And, if you wanted to, you could skip the first 3 bands I mentioned entirely. And never listen to them because you wouldn't be missing all that much.

However, if you like good music... you pretty much have to like the last 2 bands I mentioned.