Why do people do this to themselves?

"...please don't put bollocks into peeps mouths"
-except you've just admitted what I summarised is indeed the thrust of his position on a new "Corbynist" party...and indeed also informed us that he also recognises my latter point to be true too: if the mild mannered Janitor can't squeeze a few changes out the system then Dave Sparts "Revolutionary Dictatorship of the Proletariat" has got the proverbial snowballs chance in Hell.