I agree. I have found that some Marxist groups tend to be more inclined towards hero-worship than others. I’ve known worshippers of Stalin in the Communist Party, Trotsky devotees in the WRP - all good people with their hearts in the right place, but with this one serious defect in their understanding of humanity, that nobody’s perfect. On the other hand l’ve never encountered anarchists who have been uncritical of anarchist heroes, whether Kropotkin or Makhno, normally quite the reverse. I might just have been lucky.
I reckon that the fixation which many have (or had) on the Bolshevik Revolution is partly to blame. If only so-and-so, usually Trotsky, had had his way it would all have been different. Hmmmn. Different certainly, better who knows?
(By the by, anarchists have their own fixations, usually the Spanish Civil War).