Hi Billz. Yes, generally speaking, that is how the system works.
Short story: Owners and Service Departments identify issues by having a vehicle brought to them and serviced for an issue. Then the department handling Warranty claims identify repeated/chronic problem issues and areas.
Then the engineers/corporate service managers etc. compile data and identify common issues.
They then work on solutions/fixes. Then they notify Service Departments and staff of "common" problem areas and recommended first step solutions/fixes via TSB's, SSM's etc.
That was essentially how the system worked in the old days.
Now, there is still that avenue, plus the ability to fix many issues via OTA software updates, allowing us to avoid service visits. Or in some cases, the software update may require a Service Department visit.
Just a very abbreviated version of the process.
So yes, you are correct.
Good luck.