New planes go through extensive experimental phases. The F-35 took over a decade from first flight to being generally available and that’s not even considering

New planes go through extensive experimental phases. The F-35 took over a decade from first flight to being generally available and that’s not even considering the several competing aircraft that were weeded out before the F-35 was selected. Not saying you are wrong, but a 13 year span doesn’t necessarily rule out the link OP posted.