The only reason that stuff (education, degrees etc.) matters to me is that it's at least a sign that the person is knowledgeable in some area and likely has some factual information I can learn from them.
There's not a single, solitary person on the face of the earth who I give a rat's wee ballsack about their opinion on something. I don't care what anyone thinks about a movie or book or game or moral issue or political issue etc. At the end of the day, the only opinion that matters is my own.
But I have a thirst for knowledge and well-educated people have more knowledge than lesser educated--at least in whatever area of expertise they studied/work in.
Now people can of course be self educated and worth learning from, so degrees aren't required. But at the same time, they're aren't that many people working in things like retail jobs that I've met who are well read, self educated people who I'd call intellectuals. So I don't tend to give such folk the benefit of the doubt. They have to prove me wrong in my first impression, especially on something banal like forums which I treat as little more than time wasters/procrastination aids.
At the same time, there are plenty of people with Ph Ds who are morons. So while they may get the first impression benefit of the doubt, they can have it very rapidly rescinded.