No, of course I can confirm that the Reset workload counters button does NOT reset the lifetime writes value or any other similar lifetime status/statistics.
All lifetime-values (power on time, lifetwrite writes, possible errors etc.) remain. No, the function does NOT reset/clear any of such values.
The "workload counters" function of some Intel SSDs designed to allow users to watch how the SSD is generally used for longer period.
This function contains a counter (which just increases), a timed wear indicator and a % value which suggests how much % of all commands sent to the SSD is causing READ (vs WRITE).
These attributes (you can check on the S.M.A.R.T. page, their current and historical value):
226 Timed Workload Media Wear Indicator
227 Timed Workload Host Reads Percentage
228 Workload Timer
The use of the "Reset workload counters" button is completely safe, just resets the above mentioned values, so the SSD starts counting / measuring time and the read/write commands. The values may reset to 0000FFFFh and then with time, begin showing the results.
Nothing else - and nothing more, so the actual "power on time", "lifetime writes", "wearout" and other attributes are unaffected.
By this function, you can (for example) check what happens after installation / uninstallation of some software, for example software performing lots of disk I/O operation.