While I haven't read all the way back, one glaring difference I notice is that the people arguing Phineas seem to just shout out names at him/her as though it proves their point better. Belittling someone doesn't make you more right. In fact, it adds nothing to the argument other than your own negative character.
I agree with you that the name calling and swearing adds nothing of value to the exchange of ideas.
Let me suggest, however, that if you do read through all the pages of this sad thread then you might conclude as I have that PJW has consistently and intentionally sought to frustrate any real discussion of the the strengths and weaknesses of evolution as an explanation for life as we know it. I'm afraid that these over-the-top responses are exactly what he is trying to elicit because he believes these outbursts of frustration somehow lend more credence to his belief in creationism (I think you have to be a few hundred posts into the thread before he even admits to that).
The bottom line for PJW (and many others) is that what they believe about the origins of the universe and of life is determined by their religious faith, and there's no argument based on facts and the scientific method that will change their minds. It's a bit like applying a screw driver to a nail.
If these 'believers' want to be honest with themselves and with the rest of us, then they should stop pretending otherwise. Don't try to dress up your faith-based beliefs in the garb of science (like ID). Just proudly (and if need be, defiantly) state them for what they are. Then we'll all be able to avoid a science vs. religion argument which is generally divisive and always unwinnable. 'Believers' are entitled to believe whatever they want for whatever reason they want. And so are the rest of us.