You're not wrong. That guy was being a dick and he also had some good points. The two aren't mutually exclusive and more people need to learn that being blunt isn't the same thing as being incorrect. People shouldn't be required to predict how you will respond when they're making a point. Granted, it's certainly easier to be convincing when you're not alienating your audience by the way you structure your argument but sometimes, especially on the internet, it's much easier to jump right to the point than to spend the time listing out all the potential caveats to what you're saying. It's just as easy to make an attempt to understand the overall point as it is to choose to get hung up on the way something is worded. People just choose the latter because it makes dismissing the point being made easier.

Honestly though the most interesting thing about this thread is that his comments got removed and all the comments telling him to go fuck himself are still up. That seems like inconsistent moderation to me. Either let people speak their mind or encourage civil discourse evenly.