@Horsa, you are taking "simple" as an offense in music (and art in general), when absolutely it is
not. It is quite common to have masterpieces that are astoundingly simple. But it takes a true artist to get that. For example. my favorite (or one of my favorite) line in English poetry is this one by Coleridge:
"Water, water, everywhere,
And all the boards did shrink;
Water, water, everywhere,
Nor any drop to drink.”
(BTW, Iron Maiden recorded one of the
all time classics of heavy metal based on this poem.)
It is amazingly simple, but I think it is pure genius. Probably it is not a coincidence that the same guy also composed extremely intricate poems, but still... that is extremely simple.
The same is valid to music. Take Blues, for example. There are a lot of Blues songs that are extremely simple, and yet I find them fantastic (music has the interpretation dimension to it, but still). On the other hand, complexity is not a synonym of quality. There are a lot of jazz pieces which are extremely complex but I actually think that they are some good pieces of sh... Of course that are a lot of cases were complexity and artistic quality go hand in hand, and the result is absolutely fantastic, but this is not a "must have" condition.
So, "simple" alone is not even a judgment of quality, let alone a condescending one. It is just an observation (or at the very least an honest opinion).