Not really an excuse but I expect writing a browser is an extremely intensive project and perhaps they were unprepared.
Navigating any code base that isn't your own adds it's own challenge on top.
So at this point I think it's a "deer in headlights" case with some "head in sand" thrown in.
Trump supporters continue to vote red despite decisions effecting their lives in profound ways.
Look at the anti-vax response after their own child dies of a preventable disease. It's moronic.