Learn English – Expression denoting exclusivity

In common usage, infrastructure often is used unqualified to refer to good physical conditions in a community (as, for example, "Our town has the infrastructure to support your robot factory!"), although it implies little or nothing about tax, economic, and labor conditions. Of course one can also say "Their infrastructure is awful!"; that is, "good" is not an inherent quality of infrastructure.

Note, infrastructure is "The basic facilities, services and installations needed for the functioning of a community or society."

Regarding linguee.com, their "About" page clearly says, "there is no other technology anywhere else in the world that compares with Linguee", so obviously you should keep using it. :) They also assert that the translations they provide (which, if I understand correctly, are in this case English to German) are human-made (or at least human-moderated). In comparing the English and German, it seems that the connotation you suggested for the German word (i.e. "conditions necessary for a business idea to work out") do not hold up in these translations; for example, "worst imaginable conditions" going to "denkbar schlechten Rahmenbedingungen".

Based on your example, I think you can interpret it from the literal meaning of the words.

"Exclusive" adjective 1. not admitting of something else; incompatible: mutually exclusive plans of action. 2. omitting from consideration or account dictionary.com

There is also the definition in logic, where two alternatives cannot be both true.

Your example seems to state that religious fundamentalist thinking does not allow for ideas, opinions, or thought that is inconsistent with its own principles.