No, I don't think it's time to walk. It sounds like your therapy is moving right along, and I'm serious!! I've had numerous angry exchanges with T over the past 2+ years, and as he says, all emotions are welcome here. Therapy is not an intellectual exercise, nor is it all polite and rational. There have been times when I've felt like T and I were flailing around in a mud pit. I can't believe how dirty and messy it can get - this was a real surprise. And it was confirmed by another T I consulted with on a 1-time basis. I described the whole mess of a situation to him, and he smiled and said, "It sounds like your therapy is right on track." That was a year ago, and yes, he was right. So that's why I'm saying to you that I think you're on track too.
There's absolutely nothing wrong with going to T simply because you want to fight. Those are your emotions, they're genuine, and there's a reason you're feeling them. Keep going and work thru it. It sounds like your T is up to the challenge.
I just wanted to encourage you by sharing my experience. I had no idea how down & dirty it can get - or feel like it's getting. It would be much nicer to just sit on the couch sipping a cup of tea and have a lightbulb go on, all clean & neat. Rarely happens that way I guess!!