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.
I’m the same, those dongles don’t last, and are annoying to use. I picked up one of these cables from aliexpress to use with my iems and it works a treat. There’s better quality cables out there, but for 10 bucks these are solid.