Sadly Ken cannot fully comprehend your words. He is in a very bad place. Something about Rossi has stirred up all of his failures, insecurities, and his own childhood bullying in something of a focal point. This is his stand, his breaking point. He doesn't care that he has bullied Rossi's children and wife. Saying things in public that are despicable. I doubt he will ever comprehend that he is doing what Rossi did to his kid but on a much worse level.
Rossi also has numerous psychiatric disorders, many of which have been discussed here. I think he suffers from the fact that he had a somewhat promising career on tv and slowly fell into obscurity. Generating any celebrity possible, he has tried to ride this wave of attention with the hopes that in would get him back on track. However, the hair and twitter show he is desperate. I think he knows that he will never live up to his dreams, so he will hold onto his victory (BQ) at any expense. He is going down with the ship.
They are very similar people and I think that people often despise others who reflect the same traits they dislike in themselves. The fact that they are both wedding vendors in the same area just makes this so much funnier. Had they been working at rival law enforcement agencies or financial firms, it would be much more serious. I'm glad they aren't. The only thing that would be funnier is if they were rival clowns for children's birthdays. Clown drama.