Earlier quoted context omitted.
This has nothing to do with "studies" and should be pushed as a general fix. There is just no excuse. What if this had been a security incident?
Then it seems it’s a good thing they had a system in place that could deliver the quick fix in less than a day, on a Friday evening, when shipping a normal fix could have — is — taking longer to ship than that quick fix did.
No, it's not. "Studies" is not a security-related mechanism and it didn't exist in the past, when fixes were rolled out very quickly anyway for security reasons. "Studies" should not be relied on to be a fix-delivery mechanism, because it just isn't.
This is not even about privacy, it's simple good engineering sense.