It was not Jim who wrote that. It was Jim who talked and someone else wrote down what he said.
But honestly, I notice those kinds of mistakes too, but I would never call someone out because of it.
So what, some person who isn't even getting paid for it, puts a lot of work into transcribing what another person said (supposedly without any beta reader) and puts it in order on a website.
Who am I to complain about some minor grammar mistakes.
If it was a novel I have paid for and if those mistakes were extremely frequent, I would complain, because I expect a certain level of quality in a product I buy. But this? Never.
It's not even hard to understand for me and I am no native speaker.