Why bother with CC and why wait all that time. Why not train a few people to fly (P2F) and get jobs with carriers. Then there will be lots of easy opportunities to take control and crash the aircraft when the other pilot leave the cockpit. Without a "two person rule", that so many professional flight crew seem so set against, what could be easie
Yup, that would be possible. However, much much more difficult. First you have to be one of the lucky few ones who pass the selection criteria, then the background checks, then you need to upfront 100k€ to train and two years of time in which you have to be perfectly immersed into the target society (weirdos do get reported). Check out the wannabe forums how difficult it is to get that job.
All still possible, but now with just 4 weeks of training, a perfunctory check, no upfront cost at all you know you will be there.