Why beat up the middleman?

So a few days ago at work, while I was pulling state wire stories, I came across one about an administrative ruling approving Enbridge to expand a pipeline across Northern MN and into Wisconsin. This MJS story is not the exact story I was looking at, but is on the same approximate topic and will serve to give readers an idea what's going on.

These WI/MN pipelines have been at a low burn for months or years; they make regular if unspectacular appearances on the AP wire, and I'm sure they are widely ignored by all readers save those already emotionally invested in the issue of pipelines. And even those readers likely give the issue short shrift when compared with the granddaddy of all pipeline issues: Keystone XL.

Keystone XL, of course, has been all over the news for years, and is hotly opposed by environmentalists and conservationalists across the country. Here is just one of the many articles, op-eds and treatises written to express that opposition. And I will admit that for a long time, I reflexively agreed with them, on the general assumption that oil is bad, oil companies are bad, we should fight them on the beaches, on the landing grounds, in the fields and in the streets. I've been thinking more about it, a process catalyzed by the AP story I came across at work, and I'm no longer sure that's the case.