> Just that it is possible to explain something with simpler language doesn't mean it is always desirable to.
Why? As a scientist doing theoretical work, one of my main drives isn't always to discover new things, it's to explain known things "better", where better usually means in terms of simpler concepts or with more lightweight objects, with less accidental complexity. This goal of simplicity is very central in science, with concepts like occam's razor.
> There are very few people complaining about the unreadability of quantum equations in fundamental physics or the jargon of theoretical mathematics.
I can't speak for physics, but in mathematics a lot of people (mathematicians, logicians) criticize the mathematical jargon of category theory. And in fact there are lots of people in the programming language community (around type theory) that imho is trying to make category theory more accessible by using it parcimonously, rewording stuff and making it shine in simple ways (by giving some short hints for categorists but otherwise explaining classic lemma instead of referencing them).
> Yet for philosophy, especially that which criticises the current order, this is somehow seen as discrediting.
There's critic and critic. Having a text full of unnecessary jargon does imho greatly reduces any subversive pretensions. Things will always have some intrinsic complexity, but adding additional complexity in the form of tons of implicit references (when the relevant part could have been explained succintly) or poetic writing style is an obstruction to the sharing of knowledge (which is the actual benchmark for subversivity: how much can it lead to actual actions).