It amazes me how people who take the evolutionary position don't see the dogmatic parallels that theists have. What they fail to comprehend is the fallibility of man. Simply accepting that scientific principles and methodology are absolutes and therefore infallible is exactly the same inflexible position that religionists take. No room for error. "We" are right and you are all misguided or ignorant or stupid for believing etc etc. no room for doubt when dour is really the only certainty
You make several false assumptions. Firstly, the only people who consider science "infallible" are people who do no understand science or the scientific method - in fact, I would go so far as to say that they not only do not understand it, but that their position is actually anti-science, since the scientific method REQUIRES all conclusions and hypotheses to be tentative, and for no answer or idea to be above reproach. Secondly, you say that people who accept evolution (i.e: the scientific method, or at least the scientific conclusion on the subject of species origin) fail to "comprehend" the "fallibility of man". This is absurd when you consider that the scientific method was developed PRECISELY because humans are fallible, and we require a complex, thorough and impartial methodology through which we can develop an understanding of objective reality (or as close as we can get to it).
There's a difference between the dogmatic belief of creationists, and the apparent vehemence of the evolution side, and that difference is that the creationist argument relies almost entirely on distortions of facts or outright speculation, while the evolution side is founded entirely on evidence and research. It is not a case of "we are right because we do not doubt that we are right", it is a case of "all of the available evidence supports that conclusion, and you are failing to understand or acknowledge this simple fact". There is nothing wrong with taking an "inflexible position" when your position is actually the one supported by facts, and the opponent's is one of blind denial and ignorance. No doubt a person who believes the earth is flat can be just as vehement and inflexible in their belief as someone who believes the earth is round, but this does not make their positions equal. The former believes vehemently because they are either deluded, misinformed or just plain dishonest, while that latter believes what they believe because of observation of facts. The two claims do not suddenly become equal just because people believe them strongly.
When all of the available evidence points to evolution, and none of it points to creationism, this ceases to be an issue between comparative extremes who are simply fighting over beliefs. It becomes a matter of facts vs. people who are unwilling to accept those facts, to the extent where thosep people want said facts removed from educational circles and replaced with outright fabrications. Equating the two to each other is absurd.