LLM generated article.
It's possible LLMs pick up improper English, of course, since proper is some measure of what used to be a norm, but may presently be perceived as outdated.
Speakers of English in the Americas make this same substitution, which sounds like a mistake to those who speak in the version of English taught in schools. They will say "i seen that" rather than "i saw that", for example, just as would happen in Russian.