Likely. I can't find it now, but there was an HN story not long ago where someone used fairly rudimentary techniques to identify former/alt HN accounts based on stylometric similarity. It worked VERY well.
If I were going to post from a throwaway account for some reason, I would probably launder it through an intermediate language on Google Translate for one or two cycles. Otherwise, if I didn't bother with that, I'd certainly scatter some intentional errors here and there that I don't usually make.
Nowadays people would probably just use GPT prompts and rephrase to obscure identity. Good luck reversing the output to deduce the style of the author's original input.
I am quite confident that Satoshi Nakomoto was an Australian bloke(s) living in Japan when he/they/their wrote the Bitcoin Whitepaper. The code itself does suggest it was one person, but I still think it was a few people with one at the helm.
One can get quite paranoid on the internet, you know.
(I am not a dog).