It is pretty damn hard to reliably operate a service that you can’t introspect or debug in any way. The real world is more creative than you; things will happen in production that you didn’t think of in your synthetic test fixtures.

That’s still no excuse. Maybe Bill has to access some customer data to troubleshoot. Fine, log it. Maybe Susan has to look at sensitive logs to fix a bug. Fine, log it. These aren’t new or unsolvable problems.

Who says there weren’t logs? They got caught.

Please back this up and define the terms used.

As in, define "tech companies" (name specific companies that do this and why you think that can be generalized to the entire industry) and define "careless" (it's a relative term so please say if it's less or more careless of other examples of organizations that manage similarly large amounts of data but that aren't "tech companies").

Because to me the opposite seems true. It's the non-tech companies (if you equate that to FAANG) that manage large amounts of data that tend to have a lot more data leaks (internal or external) than the tech companies.