That's a bit funny to me, because the level of absurdity you get from reading something like that is insane, I have been using vim on a daily bases for more than 5 years now. One day thought about contributing to vim because was silly enough to believe that the tool shouldn't be that many lines of code, something doable, like in couple thousands, then found out its way way more than that and closer to half a mill, couldn't even dream of understanding anything, not close to be fluent enough to find RCEs.

> shouldn't be that many lines of code, something doable, like in couple thousands

If you believe that then you have hardly scratched the surface of what your editor is capable of doing.