I just realised I can put what you write above in a different way to suit my needs... technical language is obscure other than for intended audiences. But Derrida or Zizek are no more cute and entertaining than Weinberg and Dawkins are (well, I take that back: Derrida is more entertaining than the latter two). And as you correctly point out, whoever it is that makes bigger claims (such as "truth" as in a previous thread) has a very heavy burden of proof. Thus far, most truth, knowledge, undermining of systems of domination etc have been achieved mostly (I claim) through general human (i.e., non-technical -- yeah its a weird usage) means and analysis. So yeah, if you want to write esoteric techno-lingual treatises to one another, you should have all the power to do so. OTOH, to (as always) repeat myself, if you want to address or influence a more general audience, learn to talk the talk! If Chomsky can do it, so can you ;-).
--ravi