ssg, news for you - history actually knows fatal "airplane crashes on take off" caused by runway excursion due to ill-decided rejection.
"Flex power is a intentional way to decrease all safety margins to nil on take off to save for the intangible and hardly quantifiable benefit of saving on engine overhaul cost through operator imput." - sure, taking off with max power all the time does not decrease safety thru more strain on the engine.
PS. One has to admire how tolerant ppl can be in this thread.