Conversation so far:
what did Alfred Rosenberg do with the nazis?
In 1923, after the failed Beer Hall Putsch, Adolf Hitler, who had been imprisoned for treason, appointed Alfred Rosenberg as the leader of the National Socialist movement until Hitler's release.
what did Alfred Rosenberg do as leader of the National Socialist movement?
In 1929 Alfred Rosenberg founded the Militant League for German Culture.
What did the Militant League for German Culture do?
The Militant League for German Culture's aim was to make a significant imprint on cultural life in Germany based on the aims and objectives of the Nazi Party's inner circles.
did Alfred Rosenberg have any conflicts?
Adolf Hitler remarked privately in later years that his choice of Alfred Rosenberg, whom he regarded as weak and lazy, was strategic.

Question: why did he see him as weak and lazy?
Self-contained rewrite: why did Adolf Hitler see Alfred Rosenberg as weak and lazy?