Having been on lots of forums for a long time I consistently see discussions degenerate into semantic arguments i.e. 'This word means that! No it doesn't! You don't understand me! Yes I do! But you said... etc etc' This often happens when discussions get really deep.
Do you ever find that human language isn't suited to discussing complex subjects? Or is the issue more the inability of the interlocutors to use language accurately?
I'm not sure what other medium is available for discussing complex subjects. It really boils down to a question of carefully defining one's terms and the ability to communicate our ideas in a coherent and structured manner(easier said than done). We do have a rich history of ideas which suggests that giving up on language is unnecessarily defeatist.
I don't think giving up on language is necessary. I think that acknowledging its inherent limitations is, though. And I do think there will always be limitations on language, no matter how carefully we try to set the standards. The context for standardizing language is the world around us and that's always changing. Keeping a permanent, static structure for language is impossible, in my opinion.
For example, certain industries go to great lengths to standardize language usage for manuals and communications ( Aerospace has the Air Transport Associations iSpec2200, for instance), and they still can't achieve this perfectly. And that's within a very small, specific parameter with very intelligent, highly trained people. I think language is just too inherently fluid and subjective.