It's a good thing that we're protected by tenure and academic freedom, but we should realize that it creates a risk of getting cut off. Scholars should write, at least sometimes, for the general public.
I do think there's a lot of bad writing, and I worry about that in philosophy. I worry about it even more in literary studies, but I wouldn't blame it on any one methodology.
The great philosophers of the past who wrote so beautifully - Rousseau, John Stuart Mill - had to write beautifully because they had to sell their work to journals. They had to sell books to the general public because they could not hold positions in universities. Mill was an atheist, and, therefore, could not hold a position in a university.