I believe last time this was discussed it was broadly agreed that the framework isn't semantic, it's Semantic. I.e. it's just the name of the framework. Of course, it's incredibly misleading ...
Author here, semantic doesn't refer to the misappropriation of the word "semantic" by developers as "adherence to W3C specification", but instead a reference to linguistic semantics, particularly Montague grammar and compositionality.
This is not a topic that you can very easily introduce, so mostly I prefer to convince others of the library's usefulness rather than getting into a philosophical debate nobody enjoys (or benefits from) about 'the nature of meaning'.
