I'm getting this strange vibe from your comment that somehow sanitizer-induced cancer might be a greater problem than COVID, which doesn't agree with common sense if you ask me. What am I missing here?
Comparing deaths caused by COVID to deaths caused by contaminated hand sanitizer isn't a fair comparison.
Comparing lives saved by hand sanitizer to lives lost to sanitizer contamination is what I'm reading here, though it seems pretty difficult to measure either.
Nonetheless, other things are transmitted by unclean hands, which is almost certainly a greater risk than the benzene.
Some times the world is counterintuitive, and the only way to find something out is to test it. While it probably is not the case there may be poor outcomes from hand sanitizer. Would they be worse than CoVid, probably not. However given the scope of CoVid all we have to do to test this is wait. If hand sanitizer was to cause that much trouble it would become obvious at scale.
As I said, my guess is that the risk of surface-transmission of COVID is probably still greater than the risk of increased exposure to benzene. But I think given the low risk of surface transmission, it might still be worth a comparison.