If you used a language that was good at X, and saw some code trying to do X in a language not suited to it, I could see "my eyes are bleeding" being a reasonable joke to make to other people who used your language and not the other. If the intent was to mock a language rather than a programmer that seems less dickish.

The brevity of Twitter means a lot of the context is missed, even now there's some debate and confusion about what they actually meant by these comments.