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.
Then these aren’t for you and that’s fine. You don’t value what they offer, and you’re not obligated to buy them. Some of us do.