Okay, how many "good ones" dismiss anything said by the "bad scientists" because of who they work for? Everybody is free to submit papers with the evidence they can scrape up, and it's essentially impossible to keep a good paper from being published at all. Thing is, the evidence is pretty convincing if you look at it skeptically and intelligently. If a scientist working for the oil companies came up with a good paper, I really doubt the origin would be a problem. If a scientist working for the oil companies comes up with opinions not backed by the evidence, well, again I really doubt the origin would be a problem.
Science, as a discipline, works with egotistic and sometimes petty individuals who are as fallible as anybody else. It works pretty well.