Is dumping a “yes” person a good reason to end a relationship?

My first boyfriend was annoyed at me and called me out for agreeing with mostly everything he said and I would avoid conflict and do everything to make him happy. He said I never have a selfish bone and say what I want to do and sometimes want to do what he does. I wanted to be a great girlfriend with no problems. He had talks with me about being more direct and I’m boring him. He said it is okay to have an opinion and disagree with him. It sucks that he had to drag an opinion out of me and he shouldn’t have to do that. He also got upset that I wasn’t direct about what I wanted or what is going on. He said, “Stop doing that!!!!! I HATE that you butter up every damn thing to protect my feelings and you inability it be blunt! BE DIRECT AND HONEST. You’re a yes person! We need a break!”
He dumped me over a video chat but he also cheated on me behind my back with another woman. She seemed outspoken. They even kiss right in front of me and he clicked off.
I yelled at him for lying to me and cheating on me and he said, “Says the “yes” girl that has the inability to be honest and direct! Now you know how it feels!”
He didn’t feel bad for leaving me for not only cheating on me but he left me for a petite girl. She seemed rude and outspoken.