Is Agnosticism dogmatic itself fundamentally?

It’s rather common to hear a self-proclaimed agnostic state something similar to the following: “I don’t know, and neither do you” or “we can never know”. It’s common to see this concept on bumper stickers, and even among scientists. Michael Shermer himself even uses the agnostic phrases above pertaining to some topics.

Most atheists suspend belief about god/s due to the lack of evidence, which tells me they would at least be open to researching anomolous ideas with enough reason. Also, looking at religion, while many religionists do adhere to absolutism, there are many who don’t. As a result it would appear that even many religionists would be open to researching events that could/would counter their current religious beliefs.

I realize that there are different types of agnosticism, but I wanted to concentrate on what most people call strong agnosticism here. Basically I’m asking what I originally posted above: Is Agnosticism dogmatic itself fundamentally?