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 agree, I’m not advocating getting rid of headphone jacks, I just don’t use them. I don’t need a thinner phone, I want a smaller phone. I don’t need all the huge screen sizes most phones are today, because I can’t possibly use them one handed. I have a pixel 4a (non 5G variant) right now, and to me its the perfect sized phone.