If you want to play the game as a glass cannon DPS machine, you can do that with the right parts. But there's nothing stopping you from actually reading boss patterns and dodging them. The only boss this doesn't apply to is the first one, and I suspect it will get nerfed because of how many people are complaining about it. Some damage is unavoidable but it's minor, every big attack is dodgable and even accompanied by a loud warning sound. I don't think it's unfair.