If you carry on reading, its quite obvious they misconfigured a service and routed production traffic to that instead of the correct service, and the system used to do that was built in 2018 and is considered legacy (probably because you can easily deploy bad configs). Given that, I wouldn't say the summary is "inscrutable corporatese" whatever that is.
It's carefully written so my boss's boss thinks he understands it, and that we cannot possibly have that problem because we obviously don't have any "legacy components" because we are "modern and progressive".
It is, in my opinion, closer to "intentionally misleading corporatese".
Joe Shmo committed the wrong config file to production. Innocent mistake. Sally caught it in 30 seconds. We were back up inside 2 minutes. Sent Joe to the margarita shop to recover his shattered nerves. Kid deserves a raise. Etc.
