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.
In-ear phones have the potential of having the highest fidelity of all headphone types. So, no, being a “codec snob” is completely justified. Though I personally won’t be using BT phones before we get lossless connection as a standard. Wired are cheaper, last longer and have less environmental impact during production and after EOL.