A funny thing about the widespread “Jon is stupid and keeps making dumb choices that lead to him almost dying” take is that if you were to really look at his behaviour, he very much acts in the way the “horror characters are so dumb” people would want him to act.
He doesn’t jump to irrational conclusions, doesn’t dive head first into danger and instead prepares for it as well as he can etc etc. He’s very distrustful of everyone and everything due to his paranoia, and tries to do as much research as possible before heading into the unknown.
You just get annoyed at him because you, as the listener, already know the things he’s researching, and possibly already know what his actions will result in. No, his fate couldn’t have been avoided if he had done something differently. The only way Jonathan Archivist Sims’s fate could’ve been avoided would be by entirely rewriting his character story from at least the age of eight. Goodbye Mr Spider!