I agree with the first paragraph.
The second paragraph hinges on the rationale that if customer data were available, then CS (Customer Service) agents would have made every effort to contact the ops/engineering team to retrieve those to avoid a social disaster.
Unfortunately, this isn't true in the companies that I worked for, which are big customer-facing MNCs.
First of all, for US consumers, the CS teams most likely are contractors in Philippines, Malaysia, or India, they are trained with scripted responses. For any issue that is beyond the scripts, their standard response will be "Sorry we can't help you because we can't do x", one reason is they have no incentive to escalate the issue and get oneself more work to follow up, other times, it is the management explicitly decided this is to prevent too many cases hit the ops and eventually, the engineering teams. It is not that the management is stupid or nasty, just that the 20:80 rule dictates 80% of the issues usually are raised by 20% of particularly picky customers. For the 20% customers who generate 80% of the revenue, each of them will be assigned an AM (Account Manager) who can get things done much faster and more efficient than the CS team. This group of high-value customers are often given access to VPs to make sure all their issues are heard and handled properly
Second reason is most teams in a big company will not concern anything that doesn't hit them directly. For example the CS team in my ex-company upon getting repeated complaint on an erratic component that didn't get bug fix for months, eventually the CS told the upset customer to fuck off and complain to CEO directly since it was engineering department's fault.
Unbelievable? Maybe, and that company remains one of the largest high-tech companies in the world.