I agree with you. However, it's obvious--at least to me--that the guy was loaded.
Racism isn't the domain of just poorly educated people. I've met university profs who argue in defence of 'apartness' of races; argued from anthropological viewpoints that this race is not as adept as that race at whatever.
I am aware that England and Wales' educational system has taken a fast ride downhill. It's happening also in NZ, Canada and the USA. I grew up 'learning' and institutional dislike of French speakers. We formed gangs to 'keep ourselves safe'. It was all crap. Took me years to figure that out, but eventually I did. People like those the BNP send here are drunks, reprobates, sexually disfunctional folks who need to dislike someone because they dislike themselves so much. Witness 'Sam' for messed up thinking--he's really a she, but she seems to get her jollies by being thought of as a guy. Whew!
I do not think that better writing would have made that poor person's thoughts any better. BUT, they would have been easier to read.
My grandfather had a grade 3 education. He harboured no ill-will to people of any race or language or creedo, etc. Lack of education does not mean we should accept sloppy thinking from people. Had the poster NOT been a piece of shit as a thinker, I would never have mentioned his writing. Just so you understand that.