No, the answer is they're trying to deliver impact for the customer and Rachel is instead asking them to invest time in a solution that doesn't bring them any closer to that. I'd imagine most of them would be fine with fixing the root cause, but for some fucking reason everyone from Google or FB feels the need to reinvent every wheel in order to peacock and show that their IQ is the highest.
With that said, at my "normal people" non-bourgeoisie company the 3P libraries are all converted to the internal build system. If there was a fuckup of this magnitude, someone would just create a branch and bump the version number with the fix. Problem solved.