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Nah, helicopters are relatively simple machines, literally every person in this site can understand the basics of helicopter technology (of course, getting proficient and enabling a career in heli-tech is a whole different story). The only difficulty is making them bulletproof, but nowadays the crashes due to technical problems are rare.

Also, helicopters are generally used for other purposes than planes. Transporting thousands of men thousands of kilometers is probably not a job for helicopters but that does not imply that helicopters are useless.