I fret about possible downvotes and closures, and so like this, please let me check seemliness here. If my question is on-topic, please migrate it to the main site. My question is:
Andrew Clements quotes p. 4 of the liner booklet:
Having already recorded the major orchestral milestones of Bartók’s development, Pierre Boulez says he has no interest in conducting the very earliest works, such as the nationalist symphonic poem Kossuth completed in 1903, which does not disguise its debts to Liszt and Richard Strauss and in which he finds little evidence of the radical composer who would emerge over the next two decades. But his attitude towards the First Violin Concerto, composed four years later, is much more positive. In the concerto, Boulez says, as in the First String Quartet, completed the following year, and Bartók’s first ballet The Wooden Prince, which was begin in 1913, there are “weaknesses, but also no contradictions” [emboldening mine] with the composer who later came under the modernist banner.
What are the alleged 'weaknesses'?
What did Boulez intend to convey by 'no contradictions'? What exactly would contradict Bartók's compositions 'under the modernist banner'?