That would be me.
However, I (and others like me) do make a hard distinction between claims of phenomena that should be testable and falsifiable using scientific principles (eg. faith healing, extrasensory perception, etc.); and those which are inherently unfalsifiable and a matter of faith (the existence of of a deity, life after death, etc.).
A materialist worldview would be that nothing exists that is not observable, either directly or indirectly, and everything can ultimately be explained as a property of an objective, physical reality that can be tested and falsified, within the limits of our individual senses and the tools we have access to.