you have serious problems in comprehension, or you are simply trying to sidetrack the issue by quoting out of context.
who ever said anything about SUPPORTING khawarij ?
wrt to Ali b abitalib even the most viciously anti-12er groups dont have the same opinion of him as the khawarij.So even though ideologically talibs and khawarij may seem the same but there are points of difference within them and that is their attitude towards sahaba esp uthman and ali.Also note that khawarij had a very poor opinion of uthman unlike talibs today.
so dont try to oversimply the issue and play with words