Any idea of expected use time before failure?
Unlikely to be a problem, but easy enough to check just in case :
In the SMART detail, check the count against the attribute 193 'Load / Unload cycle count'.
If this is increasing over time such that it has a chance of heading towards a few hundred thousand, that's a potential wearout mechanism that would lead to a shorter life than media failures.
Normally it would hardly change and not be a problem, but some environments can cause frequent head retractions.
In those cases, the HDD operating parameters can be re-configured to change that behaviour.