With completely wireless earbuds, the rule is: when the battery fails, they have to be disposed of. Not so with the Fairbuds, that allow you to replace batteries in just a few seconds. Combined with a repairable design, the earbuds should therefore have an extremely long lifetime.
Funny you mention, I just recently got some ESD shoe harnesses to try out and see if they’ll drain it enough to reduce the shock. May have to go full ESD lab with grounded work pads and everything at some point hahaha.