He had reddit and Goodreads profiles, where he left comments and book reviews which might be used to judge his writing style (also his own handwriting may be analysed, comparing it to that of the manifesto). Although the “manifesto” is very short so maybe not enough language treaits could be extrapolated from it.
Just because someone has a college degree doesn’t mean that they can write for shit.
He had reddit and Goodreads profiles, where he left comments and book reviews which might be used to judge his writing style (also his own handwriting may be analysed, comparing it to that of the manifesto). Although the “manifesto” is very short so maybe not enough language treaits could be extrapolated from it.