Murray Bookchin and trotskyism

Murray Bookchin had a teenage admiration for Trotsky because he "stood alone against Stalin" in 1937. Bookchin about that time : “Apart from a small number of anarchists and independent leftists, relatively few American radicals knew about Kronstadt or Bolshevik atrocities against anarchists.”
Source : here

Some texts that make it clear that social ecology and trotskyism don't go well together at all :
"Listen, Marxist!", by Murray Bookchin
"Bookchin's Originality", by Janet Biehl