I'd be interested to see how many times the customer came in with additional or changed requirements. I briefly did this kind of work and every time we got to a 60-75% solution, they'd come back with "oh, yeah, no, it has to do this now instead (or in addition)."
Then map the career path of the customer and see if they suddenly became a board member of the company.
Adversaries have been using it for years. Sure, the well dried up after it was publicized, but state-level intelligence agencies still pursue it. They have the resources and people get lax.
As for the rest, Luckyo already said it. As a former carrier TAO, s/he's right. Targeting data is ridiculously time sensitive because your circle of error probable falls off spectacularly and is compounded by modern carrier tactics.
Top Ten Things Overheard At The ANSI C Draft Committee Meetings: (1) Gee, I wish we hadn't backed down on 'noalias'.