No, "were" would only be used if you were supposing a condition different than reality. When used in the first person, it's the past subjunctive. So a valid sentence with "were" might be:

"If she were a man."

As the writer is in informal in the judgement of the commenter, the commenter therefore should use "was".

But the wished-for condition is exactly that, or else it wouldn't have to be wished for. Yes, the writer is informal -- but the condition wished for is "not so informal".

Good point.