You say that "the community" derives facts or claims from unproved assumptions, yet at the same time you say that you "strongly tend to disagree" with those theories and that the theories are "flawed in the sense that they cannot account for subjective experience and agency, amongst other things" merely on account that they are neither confirmed nor unconfirmed. I am confused about your stance. You allow yourself to have strong opinions about something unknown yet criticize other people for the same.
I think it is absolutely normal that the core of a theory is based on not directly testable assumptions. And it's normal that people push it forward if it bears fruits, that's not a fallacy in any way, that's normal inquiry that may or may not lead to successful results.
I think it is absolutely normal that the core of a theory is based on not directly testable assumptions. And it's normal that people push it forward if it bears fruits, that's not a fallacy in any way, that's normal inquiry that may or may not lead to successful results.