The ADL user guide indicates that the endurance of the configuration flash area provided to the OpenAT application is approximately 100,000 erase/write cycles.
Now I’m not sure that the &W command stores the configuration in the same area - but I would think that it’s a pretty fair guess that it probably does.
In my experience, standard EEPROM tends to have an endurance to between 10,000 and 100,000 erase/write cycles - so this might let you do some calculations…